renderer.go

   1package messages
   2
   3import (
   4	"cmp"
   5	"encoding/json"
   6	"fmt"
   7	"strings"
   8	"time"
   9
  10	"charm.land/lipgloss/v2"
  11	"charm.land/lipgloss/v2/tree"
  12	"github.com/charmbracelet/crush/internal/agent"
  13	"github.com/charmbracelet/crush/internal/agent/tools"
  14	"github.com/charmbracelet/crush/internal/ansiext"
  15	"github.com/charmbracelet/crush/internal/fsext"
  16	"github.com/charmbracelet/crush/internal/tui/components/chat/todos"
  17	"github.com/charmbracelet/crush/internal/tui/components/core"
  18	"github.com/charmbracelet/crush/internal/tui/highlight"
  19	"github.com/charmbracelet/crush/internal/tui/styles"
  20	"github.com/charmbracelet/x/ansi"
  21)
  22
  23// responseContextHeight limits the number of lines displayed in tool output
  24const responseContextHeight = 10
  25
  26// renderer defines the interface for tool-specific rendering implementations
  27type renderer interface {
  28	// Render returns the complete (already styled) tool‑call view, not
  29	// including the outer border.
  30	Render(v *toolCallCmp) string
  31}
  32
  33// rendererFactory creates new renderer instances
  34type rendererFactory func() renderer
  35
  36// renderRegistry manages the mapping of tool names to their renderers
  37type renderRegistry map[string]rendererFactory
  38
  39// register adds a new renderer factory to the registry
  40func (rr renderRegistry) register(name string, f rendererFactory) { rr[name] = f }
  41
  42// lookup retrieves a renderer for the given tool name, falling back to generic renderer
  43func (rr renderRegistry) lookup(name string) renderer {
  44	if f, ok := rr[name]; ok {
  45		return f()
  46	}
  47	return genericRenderer{} // sensible fallback
  48}
  49
  50// registry holds all registered tool renderers
  51var registry = renderRegistry{}
  52
  53// baseRenderer provides common functionality for all tool renderers
  54type baseRenderer struct{}
  55
  56func (br baseRenderer) Render(v *toolCallCmp) string {
  57	if v.result.Data != "" {
  58		if strings.HasPrefix(v.result.MIMEType, "image/") {
  59			return br.renderWithParams(v, v.call.Name, nil, func() string {
  60				return renderImageContent(v, v.result.Data, v.result.MIMEType, v.result.Content)
  61			})
  62		}
  63		return br.renderWithParams(v, v.call.Name, nil, func() string {
  64			return renderMediaContent(v, v.result.MIMEType, v.result.Content)
  65		})
  66	}
  67
  68	return br.renderWithParams(v, v.call.Name, nil, func() string {
  69		return renderPlainContent(v, v.result.Content)
  70	})
  71}
  72
  73// paramBuilder helps construct parameter lists for tool headers
  74type paramBuilder struct {
  75	args []string
  76}
  77
  78// newParamBuilder creates a new parameter builder
  79func newParamBuilder() *paramBuilder {
  80	return &paramBuilder{args: make([]string, 0)}
  81}
  82
  83// addMain adds the main parameter (first argument)
  84func (pb *paramBuilder) addMain(value string) *paramBuilder {
  85	if value != "" {
  86		pb.args = append(pb.args, value)
  87	}
  88	return pb
  89}
  90
  91// addKeyValue adds a key-value pair parameter
  92func (pb *paramBuilder) addKeyValue(key, value string) *paramBuilder {
  93	if value != "" {
  94		pb.args = append(pb.args, key, value)
  95	}
  96	return pb
  97}
  98
  99// addFlag adds a boolean flag parameter
 100func (pb *paramBuilder) addFlag(key string, value bool) *paramBuilder {
 101	if value {
 102		pb.args = append(pb.args, key, "true")
 103	}
 104	return pb
 105}
 106
 107// build returns the final parameter list
 108func (pb *paramBuilder) build() []string {
 109	return pb.args
 110}
 111
 112// renderWithParams provides a common rendering pattern for tools with parameters
 113func (br baseRenderer) renderWithParams(v *toolCallCmp, toolName string, args []string, contentRenderer func() string) string {
 114	width := v.textWidth()
 115	if v.isNested {
 116		width -= 4 // Adjust for nested tool call indentation
 117	}
 118	header := br.makeHeader(v, toolName, width, args...)
 119	if v.isNested {
 120		return v.style().Render(header)
 121	}
 122	if res, done := earlyState(header, v); done {
 123		return res
 124	}
 125	body := contentRenderer()
 126	return joinHeaderBody(header, body)
 127}
 128
 129// unmarshalParams safely unmarshal JSON parameters
 130func (br baseRenderer) unmarshalParams(input string, target any) error {
 131	return json.Unmarshal([]byte(input), target)
 132}
 133
 134// makeHeader builds the tool call header with status icon and parameters for a nested tool call.
 135func (br baseRenderer) makeNestedHeader(v *toolCallCmp, tool string, width int, params ...string) string {
 136	t := styles.CurrentTheme()
 137	icon := t.S().Base.Foreground(t.GreenDark).Render(styles.ToolPending)
 138	if v.result.ToolCallID != "" {
 139		if v.result.IsError {
 140			icon = t.S().Base.Foreground(t.RedDark).Render(styles.ToolError)
 141		} else {
 142			icon = t.S().Base.Foreground(t.Green).Render(styles.ToolSuccess)
 143		}
 144	} else if v.cancelled {
 145		icon = t.S().Muted.Render(styles.ToolPending)
 146	}
 147	tool = t.S().Base.Foreground(t.FgHalfMuted).Render(tool)
 148	prefix := fmt.Sprintf("%s %s ", icon, tool)
 149	return prefix + renderParamList(true, width-lipgloss.Width(prefix), params...)
 150}
 151
 152// makeHeader builds "<Tool>: param (key=value)" and truncates as needed.
 153func (br baseRenderer) makeHeader(v *toolCallCmp, tool string, width int, params ...string) string {
 154	if v.isNested {
 155		return br.makeNestedHeader(v, tool, width, params...)
 156	}
 157	t := styles.CurrentTheme()
 158	icon := t.S().Base.Foreground(t.GreenDark).Render(styles.ToolPending)
 159	if v.result.ToolCallID != "" {
 160		if v.result.IsError {
 161			icon = t.S().Base.Foreground(t.RedDark).Render(styles.ToolError)
 162		} else {
 163			icon = t.S().Base.Foreground(t.Green).Render(styles.ToolSuccess)
 164		}
 165	} else if v.cancelled {
 166		icon = t.S().Muted.Render(styles.ToolPending)
 167	}
 168	tool = t.S().Base.Foreground(t.Blue).Render(tool)
 169	prefix := fmt.Sprintf("%s %s ", icon, tool)
 170	return prefix + renderParamList(false, width-lipgloss.Width(prefix), params...)
 171}
 172
 173// renderError provides consistent error rendering
 174func (br baseRenderer) renderError(v *toolCallCmp, message string) string {
 175	t := styles.CurrentTheme()
 176	header := br.makeHeader(v, prettifyToolName(v.call.Name), v.textWidth(), "")
 177	errorTag := t.S().Base.Padding(0, 1).Background(t.Red).Foreground(t.White).Render("ERROR")
 178	message = t.S().Base.Foreground(t.FgHalfMuted).Render(v.fit(message, v.textWidth()-3-lipgloss.Width(errorTag))) // -2 for padding and space
 179	return joinHeaderBody(header, errorTag+" "+message)
 180}
 181
 182// Register tool renderers
 183func init() {
 184	registry.register(tools.BashToolName, func() renderer { return bashRenderer{} })
 185	registry.register(tools.JobOutputToolName, func() renderer { return bashOutputRenderer{} })
 186	registry.register(tools.JobKillToolName, func() renderer { return bashKillRenderer{} })
 187	registry.register(tools.DownloadToolName, func() renderer { return downloadRenderer{} })
 188	registry.register(tools.ViewToolName, func() renderer { return viewRenderer{} })
 189	registry.register(tools.EditToolName, func() renderer { return editRenderer{} })
 190	registry.register(tools.MultiEditToolName, func() renderer { return multiEditRenderer{} })
 191	registry.register(tools.WriteToolName, func() renderer { return writeRenderer{} })
 192	registry.register(tools.FetchToolName, func() renderer { return simpleFetchRenderer{} })
 193	registry.register(tools.AgenticFetchToolName, func() renderer { return agenticFetchRenderer{} })
 194	registry.register(tools.WebFetchToolName, func() renderer { return webFetchRenderer{} })
 195	registry.register(tools.WebSearchToolName, func() renderer { return webSearchRenderer{} })
 196	registry.register(tools.GlobToolName, func() renderer { return globRenderer{} })
 197	registry.register(tools.GrepToolName, func() renderer { return grepRenderer{} })
 198	registry.register(tools.LSToolName, func() renderer { return lsRenderer{} })
 199	registry.register(tools.SourcegraphToolName, func() renderer { return sourcegraphRenderer{} })
 200	registry.register(tools.DiagnosticsToolName, func() renderer { return diagnosticsRenderer{} })
 201	registry.register(tools.TodosToolName, func() renderer { return todosRenderer{} })
 202	registry.register(agent.AgentToolName, func() renderer { return agentRenderer{} })
 203}
 204
 205// -----------------------------------------------------------------------------
 206//  Generic renderer
 207// -----------------------------------------------------------------------------
 208
 209// genericRenderer handles unknown tool types with basic parameter display
 210type genericRenderer struct {
 211	baseRenderer
 212}
 213
 214func (gr genericRenderer) Render(v *toolCallCmp) string {
 215	if v.result.Data != "" {
 216		if strings.HasPrefix(v.result.MIMEType, "image/") {
 217			return gr.renderWithParams(v, prettifyToolName(v.call.Name), []string{v.call.Input}, func() string {
 218				return renderImageContent(v, v.result.Data, v.result.MIMEType, v.result.Content)
 219			})
 220		}
 221		return gr.renderWithParams(v, prettifyToolName(v.call.Name), []string{v.call.Input}, func() string {
 222			return renderMediaContent(v, v.result.MIMEType, v.result.Content)
 223		})
 224	}
 225
 226	return gr.renderWithParams(v, prettifyToolName(v.call.Name), []string{v.call.Input}, func() string {
 227		return renderPlainContent(v, v.result.Content)
 228	})
 229}
 230
 231// -----------------------------------------------------------------------------
 232//  Bash renderer
 233// -----------------------------------------------------------------------------
 234
 235// bashRenderer handles bash command execution display
 236type bashRenderer struct {
 237	baseRenderer
 238}
 239
 240// Render displays the bash command with sanitized newlines and plain output
 241func (br bashRenderer) Render(v *toolCallCmp) string {
 242	var params tools.BashParams
 243	if err := br.unmarshalParams(v.call.Input, &params); err != nil {
 244		return br.renderError(v, "Invalid bash parameters")
 245	}
 246
 247	cmd := strings.ReplaceAll(params.Command, "\n", " ")
 248	cmd = strings.ReplaceAll(cmd, "\t", "    ")
 249	args := newParamBuilder().
 250		addMain(cmd).
 251		addFlag("background", params.RunInBackground).
 252		build()
 253	if v.call.Finished {
 254		var meta tools.BashResponseMetadata
 255		_ = br.unmarshalParams(v.result.Metadata, &meta)
 256		if meta.Background {
 257			description := cmp.Or(meta.Description, params.Command)
 258			width := v.textWidth()
 259			if v.isNested {
 260				width -= 4 // Adjust for nested tool call indentation
 261			}
 262			header := makeJobHeader(v, "Start", fmt.Sprintf("PID %s", meta.ShellID), description, width)
 263			if v.isNested {
 264				return v.style().Render(header)
 265			}
 266			if res, done := earlyState(header, v); done {
 267				return res
 268			}
 269			content := "Command: " + params.Command + "\n" + v.result.Content
 270			body := renderPlainContent(v, content)
 271			return joinHeaderBody(header, body)
 272		}
 273	}
 274
 275	return br.renderWithParams(v, "Bash", args, func() string {
 276		var meta tools.BashResponseMetadata
 277		if err := br.unmarshalParams(v.result.Metadata, &meta); err != nil {
 278			return renderPlainContent(v, v.result.Content)
 279		}
 280		// for backwards compatibility with older tool calls.
 281		if meta.Output == "" && v.result.Content != tools.BashNoOutput {
 282			meta.Output = v.result.Content
 283		}
 284
 285		if meta.Output == "" {
 286			return ""
 287		}
 288		return renderPlainContent(v, meta.Output)
 289	})
 290}
 291
 292// -----------------------------------------------------------------------------
 293//  Bash Output renderer
 294// -----------------------------------------------------------------------------
 295
 296func makeJobHeader(v *toolCallCmp, subcommand, pid, description string, width int) string {
 297	t := styles.CurrentTheme()
 298	icon := t.S().Base.Foreground(t.GreenDark).Render(styles.ToolPending)
 299	if v.result.ToolCallID != "" {
 300		if v.result.IsError {
 301			icon = t.S().Base.Foreground(t.RedDark).Render(styles.ToolError)
 302		} else {
 303			icon = t.S().Base.Foreground(t.Green).Render(styles.ToolSuccess)
 304		}
 305	} else if v.cancelled {
 306		icon = t.S().Muted.Render(styles.ToolPending)
 307	}
 308
 309	jobPart := t.S().Base.Foreground(t.Blue).Render("Job")
 310	subcommandPart := t.S().Base.Foreground(t.BlueDark).Render("(" + subcommand + ")")
 311	pidPart := t.S().Muted.Render(pid)
 312	descPart := ""
 313	if description != "" {
 314		descPart = " " + t.S().Subtle.Render(description)
 315	}
 316
 317	// Build the complete header
 318	prefix := fmt.Sprintf("%s %s %s %s", icon, jobPart, subcommandPart, pidPart)
 319	fullHeader := prefix + descPart
 320
 321	// Truncate if needed
 322	if lipgloss.Width(fullHeader) > width {
 323		availableWidth := width - lipgloss.Width(prefix) - 1 // -1 for space
 324		if availableWidth < 10 {
 325			// Not enough space for description, just show prefix
 326			return prefix
 327		}
 328		descPart = " " + t.S().Subtle.Render(ansi.Truncate(description, availableWidth, "…"))
 329		fullHeader = prefix + descPart
 330	}
 331
 332	return fullHeader
 333}
 334
 335// bashOutputRenderer handles bash output retrieval display
 336type bashOutputRenderer struct {
 337	baseRenderer
 338}
 339
 340// Render displays the shell ID and output from a background shell
 341func (bor bashOutputRenderer) Render(v *toolCallCmp) string {
 342	var params tools.JobOutputParams
 343	if err := bor.unmarshalParams(v.call.Input, &params); err != nil {
 344		return bor.renderError(v, "Invalid job_output parameters")
 345	}
 346
 347	var meta tools.JobOutputResponseMetadata
 348	var description string
 349	if v.result.Metadata != "" {
 350		if err := bor.unmarshalParams(v.result.Metadata, &meta); err == nil {
 351			if meta.Description != "" {
 352				description = meta.Description
 353			} else {
 354				description = meta.Command
 355			}
 356		}
 357	}
 358
 359	width := v.textWidth()
 360	if v.isNested {
 361		width -= 4 // Adjust for nested tool call indentation
 362	}
 363	header := makeJobHeader(v, "Output", fmt.Sprintf("PID %s", params.ShellID), description, width)
 364	if v.isNested {
 365		return v.style().Render(header)
 366	}
 367	if res, done := earlyState(header, v); done {
 368		return res
 369	}
 370	body := renderPlainContent(v, v.result.Content)
 371	return joinHeaderBody(header, body)
 372}
 373
 374// -----------------------------------------------------------------------------
 375//  Bash Kill renderer
 376// -----------------------------------------------------------------------------
 377
 378// bashKillRenderer handles bash process termination display
 379type bashKillRenderer struct {
 380	baseRenderer
 381}
 382
 383// Render displays the shell ID being terminated
 384func (bkr bashKillRenderer) Render(v *toolCallCmp) string {
 385	var params tools.JobKillParams
 386	if err := bkr.unmarshalParams(v.call.Input, &params); err != nil {
 387		return bkr.renderError(v, "Invalid job_kill parameters")
 388	}
 389
 390	var meta tools.JobKillResponseMetadata
 391	var description string
 392	if v.result.Metadata != "" {
 393		if err := bkr.unmarshalParams(v.result.Metadata, &meta); err == nil {
 394			if meta.Description != "" {
 395				description = meta.Description
 396			} else {
 397				description = meta.Command
 398			}
 399		}
 400	}
 401
 402	width := v.textWidth()
 403	if v.isNested {
 404		width -= 4 // Adjust for nested tool call indentation
 405	}
 406	header := makeJobHeader(v, "Kill", fmt.Sprintf("PID %s", params.ShellID), description, width)
 407	if v.isNested {
 408		return v.style().Render(header)
 409	}
 410	if res, done := earlyState(header, v); done {
 411		return res
 412	}
 413	body := renderPlainContent(v, v.result.Content)
 414	return joinHeaderBody(header, body)
 415}
 416
 417// -----------------------------------------------------------------------------
 418//  View renderer
 419// -----------------------------------------------------------------------------
 420
 421// viewRenderer handles file viewing with syntax highlighting and line numbers
 422type viewRenderer struct {
 423	baseRenderer
 424}
 425
 426// Render displays file content with optional limit and offset parameters
 427func (vr viewRenderer) Render(v *toolCallCmp) string {
 428	var params tools.ViewParams
 429	if err := vr.unmarshalParams(v.call.Input, &params); err != nil {
 430		return vr.renderError(v, "Invalid view parameters")
 431	}
 432
 433	file := fsext.PrettyPath(params.FilePath)
 434	args := newParamBuilder().
 435		addMain(file).
 436		addKeyValue("limit", formatNonZero(params.Limit)).
 437		addKeyValue("offset", formatNonZero(params.Offset)).
 438		build()
 439
 440	return vr.renderWithParams(v, "View", args, func() string {
 441		if v.result.Data != "" && strings.HasPrefix(v.result.MIMEType, "image/") {
 442			return renderImageContent(v, v.result.Data, v.result.MIMEType, "")
 443		}
 444
 445		var meta tools.ViewResponseMetadata
 446		if err := vr.unmarshalParams(v.result.Metadata, &meta); err != nil {
 447			return renderPlainContent(v, v.result.Content)
 448		}
 449		return renderCodeContent(v, meta.FilePath, meta.Content, params.Offset)
 450	})
 451}
 452
 453// formatNonZero returns string representation of non-zero integers, empty string for zero
 454func formatNonZero(value int) string {
 455	if value == 0 {
 456		return ""
 457	}
 458	return fmt.Sprintf("%d", value)
 459}
 460
 461// -----------------------------------------------------------------------------
 462//  Edit renderer
 463// -----------------------------------------------------------------------------
 464
 465// editRenderer handles file editing with diff visualization
 466type editRenderer struct {
 467	baseRenderer
 468}
 469
 470// Render displays the edited file with a formatted diff of changes
 471func (er editRenderer) Render(v *toolCallCmp) string {
 472	t := styles.CurrentTheme()
 473	var params tools.EditParams
 474	var args []string
 475	if err := er.unmarshalParams(v.call.Input, &params); err == nil {
 476		file := fsext.PrettyPath(params.FilePath)
 477		args = newParamBuilder().addMain(file).build()
 478	}
 479
 480	return er.renderWithParams(v, "Edit", args, func() string {
 481		var meta tools.EditResponseMetadata
 482		if err := er.unmarshalParams(v.result.Metadata, &meta); err != nil {
 483			return renderPlainContent(v, v.result.Content)
 484		}
 485
 486		formatter := core.DiffFormatter().
 487			Before(fsext.PrettyPath(params.FilePath), meta.OldContent).
 488			After(fsext.PrettyPath(params.FilePath), meta.NewContent).
 489			Width(v.textWidth() - 2) // -2 for padding
 490		if v.textWidth() > 120 {
 491			formatter = formatter.Split()
 492		}
 493		// add a message to the bottom if the content was truncated
 494		formatted := formatter.String()
 495		if lipgloss.Height(formatted) > responseContextHeight {
 496			contentLines := strings.Split(formatted, "\n")
 497			truncateMessage := t.S().Muted.
 498				Background(t.BgBaseLighter).
 499				PaddingLeft(2).
 500				Width(v.textWidth() - 2).
 501				Render(fmt.Sprintf("… (%d lines)", len(contentLines)-responseContextHeight))
 502			formatted = strings.Join(contentLines[:responseContextHeight], "\n") + "\n" + truncateMessage
 503		}
 504		return formatted
 505	})
 506}
 507
 508// -----------------------------------------------------------------------------
 509//  Multi-Edit renderer
 510// -----------------------------------------------------------------------------
 511
 512// multiEditRenderer handles multiple file edits with diff visualization
 513type multiEditRenderer struct {
 514	baseRenderer
 515}
 516
 517// Render displays the multi-edited file with a formatted diff of changes
 518func (mer multiEditRenderer) Render(v *toolCallCmp) string {
 519	t := styles.CurrentTheme()
 520	var params tools.MultiEditParams
 521	var args []string
 522	if err := mer.unmarshalParams(v.call.Input, &params); err == nil {
 523		file := fsext.PrettyPath(params.FilePath)
 524		editsCount := len(params.Edits)
 525		args = newParamBuilder().
 526			addMain(file).
 527			addKeyValue("edits", fmt.Sprintf("%d", editsCount)).
 528			build()
 529	}
 530
 531	return mer.renderWithParams(v, "Multi-Edit", args, func() string {
 532		var meta tools.MultiEditResponseMetadata
 533		if err := mer.unmarshalParams(v.result.Metadata, &meta); err != nil {
 534			return renderPlainContent(v, v.result.Content)
 535		}
 536
 537		formatter := core.DiffFormatter().
 538			Before(fsext.PrettyPath(params.FilePath), meta.OldContent).
 539			After(fsext.PrettyPath(params.FilePath), meta.NewContent).
 540			Width(v.textWidth() - 2) // -2 for padding
 541		if v.textWidth() > 120 {
 542			formatter = formatter.Split()
 543		}
 544		// add a message to the bottom if the content was truncated
 545		formatted := formatter.String()
 546		if lipgloss.Height(formatted) > responseContextHeight {
 547			contentLines := strings.Split(formatted, "\n")
 548			truncateMessage := t.S().Muted.
 549				Background(t.BgBaseLighter).
 550				PaddingLeft(2).
 551				Width(v.textWidth() - 4).
 552				Render(fmt.Sprintf("… (%d lines)", len(contentLines)-responseContextHeight))
 553			formatted = strings.Join(contentLines[:responseContextHeight], "\n") + "\n" + truncateMessage
 554		}
 555
 556		// Add failed edits warning if any exist
 557		if len(meta.EditsFailed) > 0 {
 558			noteTag := t.S().Base.Padding(0, 2).Background(t.Info).Foreground(t.White).Render("Note")
 559			noteMsg := fmt.Sprintf("%d of %d edits succeeded", meta.EditsApplied, len(params.Edits))
 560			note := t.S().Base.
 561				Width(v.textWidth() - 2).
 562				Render(fmt.Sprintf("%s %s", noteTag, t.S().Muted.Render(noteMsg)))
 563			formatted = lipgloss.JoinVertical(lipgloss.Left, formatted, "", note)
 564		}
 565
 566		return formatted
 567	})
 568}
 569
 570// -----------------------------------------------------------------------------
 571//  Write renderer
 572// -----------------------------------------------------------------------------
 573
 574// writeRenderer handles file writing with syntax-highlighted content preview
 575type writeRenderer struct {
 576	baseRenderer
 577}
 578
 579// Render displays the file being written with syntax highlighting
 580func (wr writeRenderer) Render(v *toolCallCmp) string {
 581	var params tools.WriteParams
 582	var args []string
 583	var file string
 584	if err := wr.unmarshalParams(v.call.Input, &params); err == nil {
 585		file = fsext.PrettyPath(params.FilePath)
 586		args = newParamBuilder().addMain(file).build()
 587	}
 588
 589	return wr.renderWithParams(v, "Write", args, func() string {
 590		return renderCodeContent(v, file, params.Content, 0)
 591	})
 592}
 593
 594// -----------------------------------------------------------------------------
 595//  Fetch renderer
 596// -----------------------------------------------------------------------------
 597
 598// simpleFetchRenderer handles URL fetching with format-specific content display
 599type simpleFetchRenderer struct {
 600	baseRenderer
 601}
 602
 603// Render displays the fetched URL with format and timeout parameters
 604func (fr simpleFetchRenderer) Render(v *toolCallCmp) string {
 605	var params tools.FetchParams
 606	var args []string
 607	if err := fr.unmarshalParams(v.call.Input, &params); err == nil {
 608		args = newParamBuilder().
 609			addMain(params.URL).
 610			addKeyValue("format", params.Format).
 611			addKeyValue("timeout", formatTimeout(params.Timeout)).
 612			build()
 613	}
 614
 615	return fr.renderWithParams(v, "Fetch", args, func() string {
 616		file := fr.getFileExtension(params.Format)
 617		return renderCodeContent(v, file, v.result.Content, 0)
 618	})
 619}
 620
 621// getFileExtension returns appropriate file extension for syntax highlighting
 622func (fr simpleFetchRenderer) getFileExtension(format string) string {
 623	switch format {
 624	case "text":
 625		return "fetch.txt"
 626	case "html":
 627		return "fetch.html"
 628	default:
 629		return "fetch.md"
 630	}
 631}
 632
 633// -----------------------------------------------------------------------------
 634//  Agentic fetch renderer
 635// -----------------------------------------------------------------------------
 636
 637// agenticFetchRenderer handles URL fetching with prompt parameter and nested tool calls
 638type agenticFetchRenderer struct {
 639	baseRenderer
 640}
 641
 642// Render displays the fetched URL or web search with prompt parameter and nested tool calls
 643func (fr agenticFetchRenderer) Render(v *toolCallCmp) string {
 644	t := styles.CurrentTheme()
 645	var params tools.AgenticFetchParams
 646	var args []string
 647	if err := fr.unmarshalParams(v.call.Input, &params); err == nil {
 648		if params.URL != "" {
 649			args = newParamBuilder().
 650				addMain(params.URL).
 651				build()
 652		}
 653	}
 654
 655	prompt := params.Prompt
 656	prompt = strings.ReplaceAll(prompt, "\n", " ")
 657
 658	header := fr.makeHeader(v, "Agentic Fetch", v.textWidth(), args...)
 659	if res, done := earlyState(header, v); v.cancelled && done {
 660		return res
 661	}
 662
 663	taskTag := t.S().Base.Bold(true).Padding(0, 1).MarginLeft(2).Background(t.GreenLight).Foreground(t.Border).Render("Prompt")
 664	remainingWidth := v.textWidth() - (lipgloss.Width(taskTag) + 1)
 665	remainingWidth = min(remainingWidth, 120-(lipgloss.Width(taskTag)+1))
 666	prompt = t.S().Base.Width(remainingWidth).Render(prompt)
 667	header = lipgloss.JoinVertical(
 668		lipgloss.Left,
 669		header,
 670		"",
 671		lipgloss.JoinHorizontal(
 672			lipgloss.Left,
 673			taskTag,
 674			" ",
 675			prompt,
 676		),
 677	)
 678	childTools := tree.Root(header)
 679
 680	for _, call := range v.nestedToolCalls {
 681		call.SetSize(remainingWidth, 1)
 682		childTools.Child(call.View())
 683	}
 684	parts := []string{
 685		childTools.Enumerator(RoundedEnumeratorWithWidth(2, lipgloss.Width(taskTag)-5)).String(),
 686	}
 687
 688	if v.result.ToolCallID == "" {
 689		v.spinning = true
 690		parts = append(parts, "", v.anim.View())
 691	} else {
 692		v.spinning = false
 693	}
 694
 695	header = lipgloss.JoinVertical(
 696		lipgloss.Left,
 697		parts...,
 698	)
 699
 700	if v.result.ToolCallID == "" {
 701		return header
 702	}
 703	body := renderMarkdownContent(v, v.result.Content)
 704	return joinHeaderBody(header, body)
 705}
 706
 707// formatTimeout converts timeout seconds to duration string
 708func formatTimeout(timeout int) string {
 709	if timeout == 0 {
 710		return ""
 711	}
 712	return (time.Duration(timeout) * time.Second).String()
 713}
 714
 715// -----------------------------------------------------------------------------
 716//  Web fetch renderer
 717// -----------------------------------------------------------------------------
 718
 719// webFetchRenderer handles web page fetching with simplified URL display
 720type webFetchRenderer struct {
 721	baseRenderer
 722}
 723
 724// Render displays a compact view of web_fetch with just the URL in a link style
 725func (wfr webFetchRenderer) Render(v *toolCallCmp) string {
 726	var params tools.WebFetchParams
 727	var args []string
 728	if err := wfr.unmarshalParams(v.call.Input, &params); err == nil {
 729		args = newParamBuilder().
 730			addMain(params.URL).
 731			build()
 732	}
 733
 734	return wfr.renderWithParams(v, "Fetch", args, func() string {
 735		return renderMarkdownContent(v, v.result.Content)
 736	})
 737}
 738
 739// -----------------------------------------------------------------------------
 740//  Web search renderer
 741// -----------------------------------------------------------------------------
 742
 743// webSearchRenderer handles web search with query display
 744type webSearchRenderer struct {
 745	baseRenderer
 746}
 747
 748// Render displays a compact view of web_search with just the query
 749func (wsr webSearchRenderer) Render(v *toolCallCmp) string {
 750	var params tools.WebSearchParams
 751	var args []string
 752	if err := wsr.unmarshalParams(v.call.Input, &params); err == nil {
 753		args = newParamBuilder().
 754			addMain(params.Query).
 755			build()
 756	}
 757
 758	return wsr.renderWithParams(v, "Search", args, func() string {
 759		return renderMarkdownContent(v, v.result.Content)
 760	})
 761}
 762
 763// -----------------------------------------------------------------------------
 764//  Download renderer
 765// -----------------------------------------------------------------------------
 766
 767// downloadRenderer handles file downloading with URL and file path display
 768type downloadRenderer struct {
 769	baseRenderer
 770}
 771
 772// Render displays the download URL and destination file path with timeout parameter
 773func (dr downloadRenderer) Render(v *toolCallCmp) string {
 774	var params tools.DownloadParams
 775	var args []string
 776	if err := dr.unmarshalParams(v.call.Input, &params); err == nil {
 777		args = newParamBuilder().
 778			addMain(params.URL).
 779			addKeyValue("file_path", fsext.PrettyPath(params.FilePath)).
 780			addKeyValue("timeout", formatTimeout(params.Timeout)).
 781			build()
 782	}
 783
 784	return dr.renderWithParams(v, "Download", args, func() string {
 785		return renderPlainContent(v, v.result.Content)
 786	})
 787}
 788
 789// -----------------------------------------------------------------------------
 790//  Glob renderer
 791// -----------------------------------------------------------------------------
 792
 793// globRenderer handles file pattern matching with path filtering
 794type globRenderer struct {
 795	baseRenderer
 796}
 797
 798// Render displays the glob pattern with optional path parameter
 799func (gr globRenderer) Render(v *toolCallCmp) string {
 800	var params tools.GlobParams
 801	var args []string
 802	if err := gr.unmarshalParams(v.call.Input, &params); err == nil {
 803		args = newParamBuilder().
 804			addMain(params.Pattern).
 805			addKeyValue("path", params.Path).
 806			build()
 807	}
 808
 809	return gr.renderWithParams(v, "Glob", args, func() string {
 810		return renderPlainContent(v, v.result.Content)
 811	})
 812}
 813
 814// -----------------------------------------------------------------------------
 815//  Grep renderer
 816// -----------------------------------------------------------------------------
 817
 818// grepRenderer handles content searching with pattern matching options
 819type grepRenderer struct {
 820	baseRenderer
 821}
 822
 823// Render displays the search pattern with path, include, and literal text options
 824func (gr grepRenderer) Render(v *toolCallCmp) string {
 825	var params tools.GrepParams
 826	var args []string
 827	if err := gr.unmarshalParams(v.call.Input, &params); err == nil {
 828		args = newParamBuilder().
 829			addMain(params.Pattern).
 830			addKeyValue("path", params.Path).
 831			addKeyValue("include", params.Include).
 832			addFlag("literal", params.LiteralText).
 833			build()
 834	}
 835
 836	return gr.renderWithParams(v, "Grep", args, func() string {
 837		return renderPlainContent(v, v.result.Content)
 838	})
 839}
 840
 841// -----------------------------------------------------------------------------
 842//  LS renderer
 843// -----------------------------------------------------------------------------
 844
 845// lsRenderer handles directory listing with default path handling
 846type lsRenderer struct {
 847	baseRenderer
 848}
 849
 850// Render displays the directory path, defaulting to current directory
 851func (lr lsRenderer) Render(v *toolCallCmp) string {
 852	var params tools.LSParams
 853	var args []string
 854	if err := lr.unmarshalParams(v.call.Input, &params); err == nil {
 855		path := params.Path
 856		if path == "" {
 857			path = "."
 858		}
 859		path = fsext.PrettyPath(path)
 860
 861		args = newParamBuilder().addMain(path).build()
 862	}
 863
 864	return lr.renderWithParams(v, "List", args, func() string {
 865		return renderPlainContent(v, v.result.Content)
 866	})
 867}
 868
 869// -----------------------------------------------------------------------------
 870//  Sourcegraph renderer
 871// -----------------------------------------------------------------------------
 872
 873// sourcegraphRenderer handles code search with count and context options
 874type sourcegraphRenderer struct {
 875	baseRenderer
 876}
 877
 878// Render displays the search query with optional count and context window parameters
 879func (sr sourcegraphRenderer) Render(v *toolCallCmp) string {
 880	var params tools.SourcegraphParams
 881	var args []string
 882	if err := sr.unmarshalParams(v.call.Input, &params); err == nil {
 883		args = newParamBuilder().
 884			addMain(params.Query).
 885			addKeyValue("count", formatNonZero(params.Count)).
 886			addKeyValue("context", formatNonZero(params.ContextWindow)).
 887			build()
 888	}
 889
 890	return sr.renderWithParams(v, "Sourcegraph", args, func() string {
 891		return renderPlainContent(v, v.result.Content)
 892	})
 893}
 894
 895// -----------------------------------------------------------------------------
 896//  Diagnostics renderer
 897// -----------------------------------------------------------------------------
 898
 899// diagnosticsRenderer handles project-wide diagnostic information
 900type diagnosticsRenderer struct {
 901	baseRenderer
 902}
 903
 904// Render displays project diagnostics with plain content formatting
 905func (dr diagnosticsRenderer) Render(v *toolCallCmp) string {
 906	args := newParamBuilder().addMain("project").build()
 907
 908	return dr.renderWithParams(v, "Diagnostics", args, func() string {
 909		return renderPlainContent(v, v.result.Content)
 910	})
 911}
 912
 913// -----------------------------------------------------------------------------
 914//  Task renderer
 915// -----------------------------------------------------------------------------
 916
 917// agentRenderer handles project-wide diagnostic information
 918type agentRenderer struct {
 919	baseRenderer
 920}
 921
 922func RoundedEnumeratorWithWidth(lPadding, width int) tree.Enumerator {
 923	if width == 0 {
 924		width = 2
 925	}
 926	if lPadding == 0 {
 927		lPadding = 1
 928	}
 929	return func(children tree.Children, index int) string {
 930		line := strings.Repeat("─", width)
 931		padding := strings.Repeat(" ", lPadding)
 932		if children.Length()-1 == index {
 933			return padding + "╰" + line
 934		}
 935		return padding + "├" + line
 936	}
 937}
 938
 939// Render displays agent task parameters and result content
 940func (tr agentRenderer) Render(v *toolCallCmp) string {
 941	t := styles.CurrentTheme()
 942	var params agent.AgentParams
 943	tr.unmarshalParams(v.call.Input, &params)
 944
 945	prompt := params.Prompt
 946	prompt = strings.ReplaceAll(prompt, "\n", " ")
 947
 948	header := tr.makeHeader(v, "Agent", v.textWidth())
 949	if res, done := earlyState(header, v); v.cancelled && done {
 950		return res
 951	}
 952	taskTag := t.S().Base.Bold(true).Padding(0, 1).MarginLeft(2).Background(t.BlueLight).Foreground(t.White).Render("Task")
 953	remainingWidth := v.textWidth() - lipgloss.Width(header) - lipgloss.Width(taskTag) - 2
 954	remainingWidth = min(remainingWidth, 120-lipgloss.Width(taskTag)-2)
 955	prompt = t.S().Muted.Width(remainingWidth).Render(prompt)
 956	header = lipgloss.JoinVertical(
 957		lipgloss.Left,
 958		header,
 959		"",
 960		lipgloss.JoinHorizontal(
 961			lipgloss.Left,
 962			taskTag,
 963			" ",
 964			prompt,
 965		),
 966	)
 967	childTools := tree.Root(header)
 968
 969	for _, call := range v.nestedToolCalls {
 970		call.SetSize(remainingWidth, 1)
 971		childTools.Child(call.View())
 972	}
 973	parts := []string{
 974		childTools.Enumerator(RoundedEnumeratorWithWidth(2, lipgloss.Width(taskTag)-5)).String(),
 975	}
 976
 977	if v.result.ToolCallID == "" {
 978		v.spinning = true
 979		parts = append(parts, "", v.anim.View())
 980	} else {
 981		v.spinning = false
 982	}
 983
 984	header = lipgloss.JoinVertical(
 985		lipgloss.Left,
 986		parts...,
 987	)
 988
 989	if v.result.ToolCallID == "" {
 990		return header
 991	}
 992
 993	body := renderMarkdownContent(v, v.result.Content)
 994	return joinHeaderBody(header, body)
 995}
 996
 997// renderParamList renders params, params[0] (params[1]=params[2] ....)
 998func renderParamList(nested bool, paramsWidth int, params ...string) string {
 999	t := styles.CurrentTheme()
1000	if len(params) == 0 {
1001		return ""
1002	}
1003	mainParam := params[0]
1004	if paramsWidth >= 0 && lipgloss.Width(mainParam) > paramsWidth {
1005		mainParam = ansi.Truncate(mainParam, paramsWidth, "…")
1006	}
1007
1008	if len(params) == 1 {
1009		return t.S().Subtle.Render(mainParam)
1010	}
1011	otherParams := params[1:]
1012	// create pairs of key/value
1013	// if odd number of params, the last one is a key without value
1014	if len(otherParams)%2 != 0 {
1015		otherParams = append(otherParams, "")
1016	}
1017	parts := make([]string, 0, len(otherParams)/2)
1018	for i := 0; i < len(otherParams); i += 2 {
1019		key := otherParams[i]
1020		value := otherParams[i+1]
1021		if value == "" {
1022			continue
1023		}
1024		parts = append(parts, fmt.Sprintf("%s=%s", key, value))
1025	}
1026
1027	partsRendered := strings.Join(parts, ", ")
1028	remainingWidth := paramsWidth - lipgloss.Width(partsRendered) - 3 // count for " ()"
1029	if remainingWidth < 30 {
1030		// No space for the params, just show the main
1031		return t.S().Subtle.Render(mainParam)
1032	}
1033
1034	if len(parts) > 0 {
1035		mainParam = fmt.Sprintf("%s (%s)", mainParam, strings.Join(parts, ", "))
1036	}
1037
1038	return t.S().Subtle.Render(ansi.Truncate(mainParam, paramsWidth, "…"))
1039}
1040
1041// earlyState returns immediately‑rendered error/cancelled/ongoing states.
1042func earlyState(header string, v *toolCallCmp) (string, bool) {
1043	t := styles.CurrentTheme()
1044	message := ""
1045	switch {
1046	case v.result.IsError:
1047		message = v.renderToolError()
1048	case v.cancelled:
1049		message = t.S().Base.Foreground(t.FgSubtle).Render("Canceled.")
1050	case v.result.ToolCallID == "":
1051		if v.permissionRequested && !v.permissionGranted {
1052			message = t.S().Base.Foreground(t.FgSubtle).Render("Requesting permission...")
1053		} else {
1054			message = t.S().Base.Foreground(t.FgSubtle).Render("Waiting for tool response...")
1055		}
1056	default:
1057		return "", false
1058	}
1059
1060	message = t.S().Base.PaddingLeft(2).Render(message)
1061	return lipgloss.JoinVertical(lipgloss.Left, header, "", message), true
1062}
1063
1064func joinHeaderBody(header, body string) string {
1065	t := styles.CurrentTheme()
1066	if body == "" {
1067		return header
1068	}
1069	body = t.S().Base.PaddingLeft(2).Render(body)
1070	return lipgloss.JoinVertical(lipgloss.Left, header, "", body)
1071}
1072
1073func renderPlainContent(v *toolCallCmp, content string) string {
1074	t := styles.CurrentTheme()
1075	content = strings.ReplaceAll(content, "\r\n", "\n") // Normalize line endings
1076	content = strings.ReplaceAll(content, "\t", "    ") // Replace tabs with spaces
1077	content = strings.TrimSpace(content)
1078	lines := strings.Split(content, "\n")
1079
1080	width := v.textWidth() - 2
1081	var out []string
1082	for i, ln := range lines {
1083		if i >= responseContextHeight {
1084			break
1085		}
1086		ln = ansiext.Escape(ln)
1087		ln = " " + ln
1088		if lipgloss.Width(ln) > width {
1089			ln = v.fit(ln, width)
1090		}
1091		out = append(out, t.S().Muted.
1092			Width(width).
1093			Background(t.BgBaseLighter).
1094			Render(ln))
1095	}
1096
1097	if len(lines) > responseContextHeight {
1098		out = append(out, t.S().Muted.
1099			Background(t.BgBaseLighter).
1100			Width(width).
1101			Render(fmt.Sprintf("… (%d lines)", len(lines)-responseContextHeight)))
1102	}
1103
1104	return strings.Join(out, "\n")
1105}
1106
1107func renderMarkdownContent(v *toolCallCmp, content string) string {
1108	t := styles.CurrentTheme()
1109	content = strings.ReplaceAll(content, "\r\n", "\n")
1110	content = strings.ReplaceAll(content, "\t", "    ")
1111	content = strings.TrimSpace(content)
1112
1113	width := v.textWidth() - 2
1114	width = min(width, 120)
1115
1116	renderer := styles.GetPlainMarkdownRenderer(width)
1117	rendered, err := renderer.Render(content)
1118	if err != nil {
1119		return renderPlainContent(v, content)
1120	}
1121
1122	lines := strings.Split(rendered, "\n")
1123
1124	var out []string
1125	for i, ln := range lines {
1126		if i >= responseContextHeight {
1127			break
1128		}
1129		out = append(out, ln)
1130	}
1131
1132	style := t.S().Muted.Background(t.BgBaseLighter)
1133	if len(lines) > responseContextHeight {
1134		out = append(out, style.
1135			Width(width-2).
1136			Render(fmt.Sprintf("… (%d lines)", len(lines)-responseContextHeight)))
1137	}
1138
1139	return style.Render(strings.Join(out, "\n"))
1140}
1141
1142func getDigits(n int) int {
1143	if n == 0 {
1144		return 1
1145	}
1146	if n < 0 {
1147		n = -n
1148	}
1149
1150	digits := 0
1151	for n > 0 {
1152		n /= 10
1153		digits++
1154	}
1155
1156	return digits
1157}
1158
1159func renderCodeContent(v *toolCallCmp, path, content string, offset int) string {
1160	t := styles.CurrentTheme()
1161	content = strings.ReplaceAll(content, "\r\n", "\n") // Normalize line endings
1162	content = strings.ReplaceAll(content, "\t", "    ") // Replace tabs with spaces
1163	truncated := truncateHeight(content, responseContextHeight)
1164
1165	lines := strings.Split(truncated, "\n")
1166	for i, ln := range lines {
1167		lines[i] = ansiext.Escape(ln)
1168	}
1169
1170	bg := t.BgBase
1171	highlighted, _ := highlight.SyntaxHighlight(strings.Join(lines, "\n"), path, bg)
1172	lines = strings.Split(highlighted, "\n")
1173
1174	if len(strings.Split(content, "\n")) > responseContextHeight {
1175		lines = append(lines, t.S().Muted.
1176			Background(bg).
1177			Render(fmt.Sprintf(" …(%d lines)", len(strings.Split(content, "\n"))-responseContextHeight)))
1178	}
1179
1180	maxLineNumber := len(lines) + offset
1181	maxDigits := getDigits(maxLineNumber)
1182	numFmt := fmt.Sprintf("%%%dd", maxDigits)
1183	const numPR, numPL, codePR, codePL = 1, 1, 1, 2
1184	w := v.textWidth() - maxDigits - numPL - numPR - 2 // -2 for left padding
1185	for i, ln := range lines {
1186		num := t.S().Base.
1187			Foreground(t.FgMuted).
1188			Background(t.BgBase).
1189			PaddingRight(1).
1190			PaddingLeft(1).
1191			Render(fmt.Sprintf(numFmt, i+1+offset))
1192		lines[i] = lipgloss.JoinHorizontal(lipgloss.Left,
1193			num,
1194			t.S().Base.
1195				Width(w).
1196				Background(bg).
1197				PaddingRight(1).
1198				PaddingLeft(2).
1199				Render(v.fit(ln, w-codePL-codePR)),
1200		)
1201	}
1202
1203	return lipgloss.JoinVertical(lipgloss.Left, lines...)
1204}
1205
1206// renderImageContent renders image data with optional text content (for MCP tools).
1207func renderImageContent(v *toolCallCmp, data, mediaType, textContent string) string {
1208	t := styles.CurrentTheme()
1209
1210	dataSize := len(data) * 3 / 4
1211	sizeStr := formatSize(dataSize)
1212
1213	loaded := t.S().Base.Foreground(t.Green).Render("Loaded")
1214	arrow := t.S().Base.Foreground(t.GreenDark).Render("→")
1215	typeStyled := t.S().Base.Render(mediaType)
1216	sizeStyled := t.S().Subtle.Render(sizeStr)
1217
1218	imageDisplay := fmt.Sprintf("%s %s %s %s", loaded, arrow, typeStyled, sizeStyled)
1219	if strings.TrimSpace(textContent) != "" {
1220		textDisplay := renderPlainContent(v, textContent)
1221		return lipgloss.JoinVertical(lipgloss.Left, textDisplay, "", imageDisplay)
1222	}
1223
1224	return imageDisplay
1225}
1226
1227// renderMediaContent renders non-image media content.
1228func renderMediaContent(v *toolCallCmp, mediaType, textContent string) string {
1229	t := styles.CurrentTheme()
1230
1231	loaded := t.S().Base.Foreground(t.Green).Render("Loaded")
1232	arrow := t.S().Base.Foreground(t.GreenDark).Render("→")
1233	typeStyled := t.S().Base.Render(mediaType)
1234	mediaDisplay := fmt.Sprintf("%s %s %s", loaded, arrow, typeStyled)
1235
1236	if strings.TrimSpace(textContent) != "" {
1237		textDisplay := renderPlainContent(v, textContent)
1238		return lipgloss.JoinVertical(lipgloss.Left, textDisplay, "", mediaDisplay)
1239	}
1240
1241	return mediaDisplay
1242}
1243
1244// formatSize formats byte count as human-readable size.
1245func formatSize(bytes int) string {
1246	if bytes < 1024 {
1247		return fmt.Sprintf("%d B", bytes)
1248	}
1249	if bytes < 1024*1024 {
1250		return fmt.Sprintf("%.1f KB", float64(bytes)/1024)
1251	}
1252	return fmt.Sprintf("%.1f MB", float64(bytes)/(1024*1024))
1253}
1254
1255func (v *toolCallCmp) renderToolError() string {
1256	t := styles.CurrentTheme()
1257	err := strings.ReplaceAll(v.result.Content, "\n", " ")
1258	errTag := t.S().Base.Padding(0, 1).Background(t.Red).Foreground(t.White).Render("ERROR")
1259	err = fmt.Sprintf("%s %s", errTag, t.S().Base.Foreground(t.FgHalfMuted).Render(v.fit(err, v.textWidth()-2-lipgloss.Width(errTag))))
1260	return err
1261}
1262
1263func truncateHeight(s string, h int) string {
1264	lines := strings.Split(s, "\n")
1265	if len(lines) > h {
1266		return strings.Join(lines[:h], "\n")
1267	}
1268	return s
1269}
1270
1271func prettifyToolName(name string) string {
1272	switch name {
1273	case agent.AgentToolName:
1274		return "Agent"
1275	case tools.BashToolName:
1276		return "Bash"
1277	case tools.JobOutputToolName:
1278		return "Job: Output"
1279	case tools.JobKillToolName:
1280		return "Job: Kill"
1281	case tools.DownloadToolName:
1282		return "Download"
1283	case tools.EditToolName:
1284		return "Edit"
1285	case tools.MultiEditToolName:
1286		return "Multi-Edit"
1287	case tools.FetchToolName:
1288		return "Fetch"
1289	case tools.AgenticFetchToolName:
1290		return "Agentic Fetch"
1291	case tools.WebFetchToolName:
1292		return "Fetch"
1293	case tools.WebSearchToolName:
1294		return "Search"
1295	case tools.GlobToolName:
1296		return "Glob"
1297	case tools.GrepToolName:
1298		return "Grep"
1299	case tools.LSToolName:
1300		return "List"
1301	case tools.SourcegraphToolName:
1302		return "Sourcegraph"
1303	case tools.TodosToolName:
1304		return "To-Do"
1305	case tools.ViewToolName:
1306		return "View"
1307	case tools.WriteToolName:
1308		return "Write"
1309	default:
1310		return name
1311	}
1312}
1313
1314// -----------------------------------------------------------------------------
1315//  Todos renderer
1316// -----------------------------------------------------------------------------
1317
1318type todosRenderer struct {
1319	baseRenderer
1320}
1321
1322func (tr todosRenderer) Render(v *toolCallCmp) string {
1323	t := styles.CurrentTheme()
1324	var params tools.TodosParams
1325	var meta tools.TodosResponseMetadata
1326	var headerText string
1327	var body string
1328
1329	// Parse params for pending state (before result is available).
1330	if err := tr.unmarshalParams(v.call.Input, &params); err == nil {
1331		completedCount := 0
1332		inProgressTask := ""
1333		for _, todo := range params.Todos {
1334			if todo.Status == "completed" {
1335				completedCount++
1336			}
1337			if todo.Status == "in_progress" {
1338				if todo.ActiveForm != "" {
1339					inProgressTask = todo.ActiveForm
1340				} else {
1341					inProgressTask = todo.Content
1342				}
1343			}
1344		}
1345
1346		// Default display from params (used when pending or no metadata).
1347		ratio := t.S().Base.Foreground(t.BlueDark).Render(fmt.Sprintf("%d/%d", completedCount, len(params.Todos)))
1348		headerText = ratio
1349		if inProgressTask != "" {
1350			headerText = fmt.Sprintf("%s · %s", ratio, inProgressTask)
1351		}
1352
1353		// If we have metadata, use it for richer display.
1354		if v.result.Metadata != "" {
1355			if err := tr.unmarshalParams(v.result.Metadata, &meta); err == nil {
1356				if meta.IsNew {
1357					if meta.JustStarted != "" {
1358						headerText = fmt.Sprintf("created %d todos, starting first", meta.Total)
1359					} else {
1360						headerText = fmt.Sprintf("created %d todos", meta.Total)
1361					}
1362					body = todos.FormatTodosList(meta.Todos, styles.ArrowRightIcon, t, v.textWidth())
1363				} else {
1364					// Build header based on what changed.
1365					hasCompleted := len(meta.JustCompleted) > 0
1366					hasStarted := meta.JustStarted != ""
1367					allCompleted := meta.Completed == meta.Total
1368
1369					ratio := t.S().Base.Foreground(t.BlueDark).Render(fmt.Sprintf("%d/%d", meta.Completed, meta.Total))
1370					if hasCompleted && hasStarted {
1371						text := t.S().Subtle.Render(fmt.Sprintf(" · completed %d, starting next", len(meta.JustCompleted)))
1372						headerText = fmt.Sprintf("%s%s", ratio, text)
1373					} else if hasCompleted {
1374						text := t.S().Subtle.Render(fmt.Sprintf(" · completed %d", len(meta.JustCompleted)))
1375						if allCompleted {
1376							text = t.S().Subtle.Render(" · completed all")
1377						}
1378						headerText = fmt.Sprintf("%s%s", ratio, text)
1379					} else if hasStarted {
1380						headerText = fmt.Sprintf("%s%s", ratio, t.S().Subtle.Render(" · starting task"))
1381					} else {
1382						headerText = ratio
1383					}
1384
1385					// Build body with details.
1386					if allCompleted {
1387						// Show all todos when all are completed, like when created
1388						body = todos.FormatTodosList(meta.Todos, styles.ArrowRightIcon, t, v.textWidth())
1389					} else if meta.JustStarted != "" {
1390						body = t.S().Base.Foreground(t.GreenDark).Render(styles.ArrowRightIcon+" ") +
1391							t.S().Base.Foreground(t.FgBase).Render(meta.JustStarted)
1392					}
1393				}
1394			}
1395		}
1396	}
1397
1398	args := newParamBuilder().addMain(headerText).build()
1399
1400	return tr.renderWithParams(v, "To-Do", args, func() string {
1401		return body
1402	})
1403}