1package client
  2
  3import (
  4	"bufio"
  5	"bytes"
  6	"context"
  7	"encoding/json"
  8	"errors"
  9	"fmt"
 10	"io"
 11	"log/slog"
 12	"net/http"
 13	"net/url"
 14	"time"
 15
 16	"github.com/charmbracelet/crush/internal/config"
 17	"github.com/charmbracelet/crush/internal/message"
 18	"github.com/charmbracelet/crush/internal/proto"
 19	"github.com/charmbracelet/crush/internal/pubsub"
 20	"github.com/charmbracelet/x/powernap/pkg/lsp/protocol"
 21)
 22
 23// ListWorkspaces retrieves all workspaces from the server.
 24func (c *Client) ListWorkspaces(ctx context.Context) ([]proto.Workspace, error) {
 25	rsp, err := c.get(ctx, "/workspaces", nil, nil)
 26	if err != nil {
 27		return nil, fmt.Errorf("failed to list workspaces: %w", err)
 28	}
 29	defer rsp.Body.Close()
 30	if rsp.StatusCode != http.StatusOK {
 31		return nil, fmt.Errorf("failed to list workspaces: status code %d", rsp.StatusCode)
 32	}
 33	var workspaces []proto.Workspace
 34	if err := json.NewDecoder(rsp.Body).Decode(&workspaces); err != nil {
 35		return nil, fmt.Errorf("failed to decode workspaces: %w", err)
 36	}
 37	return workspaces, nil
 38}
 39
 40// CreateWorkspace creates a new workspace on the server.
 41func (c *Client) CreateWorkspace(ctx context.Context, ws proto.Workspace) (*proto.Workspace, error) {
 42	rsp, err := c.post(ctx, "/workspaces", nil, jsonBody(ws), http.Header{"Content-Type": []string{"application/json"}})
 43	if err != nil {
 44		return nil, fmt.Errorf("failed to create workspace: %w", err)
 45	}
 46	defer rsp.Body.Close()
 47	if rsp.StatusCode != http.StatusOK {
 48		return nil, fmt.Errorf("failed to create workspace: status code %d", rsp.StatusCode)
 49	}
 50	var created proto.Workspace
 51	if err := json.NewDecoder(rsp.Body).Decode(&created); err != nil {
 52		return nil, fmt.Errorf("failed to decode workspace: %w", err)
 53	}
 54	return &created, nil
 55}
 56
 57// GetWorkspace retrieves a workspace from the server.
 58func (c *Client) GetWorkspace(ctx context.Context, id string) (*proto.Workspace, error) {
 59	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s", id), nil, nil)
 60	if err != nil {
 61		return nil, fmt.Errorf("failed to get workspace: %w", err)
 62	}
 63	defer rsp.Body.Close()
 64	if rsp.StatusCode != http.StatusOK {
 65		return nil, fmt.Errorf("failed to get workspace: status code %d", rsp.StatusCode)
 66	}
 67	var ws proto.Workspace
 68	if err := json.NewDecoder(rsp.Body).Decode(&ws); err != nil {
 69		return nil, fmt.Errorf("failed to decode workspace: %w", err)
 70	}
 71	return &ws, nil
 72}
 73
 74// DeleteWorkspace deletes a workspace on the server.
 75func (c *Client) DeleteWorkspace(ctx context.Context, id string) error {
 76	rsp, err := c.delete(ctx, fmt.Sprintf("/workspaces/%s", id), nil, nil)
 77	if err != nil {
 78		return fmt.Errorf("failed to delete workspace: %w", err)
 79	}
 80	defer rsp.Body.Close()
 81	if rsp.StatusCode != http.StatusOK {
 82		return fmt.Errorf("failed to delete workspace: status code %d", rsp.StatusCode)
 83	}
 84	return nil
 85}
 86
 87// SubscribeEvents subscribes to server-sent events for a workspace.
 88func (c *Client) SubscribeEvents(ctx context.Context, id string) (<-chan any, error) {
 89	events := make(chan any, 100)
 90	//nolint:bodyclose
 91	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/events", id), nil, http.Header{
 92		"Accept":        []string{"text/event-stream"},
 93		"Cache-Control": []string{"no-cache"},
 94		"Connection":    []string{"keep-alive"},
 95	})
 96	if err != nil {
 97		return nil, fmt.Errorf("failed to subscribe to events: %w", err)
 98	}
 99
100	if rsp.StatusCode != http.StatusOK {
101		rsp.Body.Close()
102		return nil, fmt.Errorf("failed to subscribe to events: status code %d", rsp.StatusCode)
103	}
104
105	go func() {
106		defer rsp.Body.Close()
107
108		scr := bufio.NewReader(rsp.Body)
109		for {
110			line, err := scr.ReadBytes('\n')
111			if errors.Is(err, io.EOF) {
112				break
113			}
114			if err != nil {
115				slog.Error("Reading from events stream", "error", err)
116				time.Sleep(time.Second * 2)
117				continue
118			}
119			line = bytes.TrimSpace(line)
120			if len(line) == 0 {
121				continue
122			}
123
124			data, ok := bytes.CutPrefix(line, []byte("data:"))
125			if !ok {
126				slog.Warn("Invalid event format", "line", string(line))
127				continue
128			}
129
130			data = bytes.TrimSpace(data)
131
132			var p pubsub.Payload
133			if err := json.Unmarshal(data, &p); err != nil {
134				slog.Error("Unmarshaling event envelope", "error", err)
135				continue
136			}
137
138			switch p.Type {
139			case pubsub.PayloadTypeLSPEvent:
140				var e pubsub.Event[proto.LSPEvent]
141				_ = json.Unmarshal(p.Payload, &e)
142				sendEvent(ctx, events, e)
143			case pubsub.PayloadTypeMCPEvent:
144				var e pubsub.Event[proto.MCPEvent]
145				_ = json.Unmarshal(p.Payload, &e)
146				sendEvent(ctx, events, e)
147			case pubsub.PayloadTypePermissionRequest:
148				var e pubsub.Event[proto.PermissionRequest]
149				_ = json.Unmarshal(p.Payload, &e)
150				sendEvent(ctx, events, e)
151			case pubsub.PayloadTypePermissionNotification:
152				var e pubsub.Event[proto.PermissionNotification]
153				_ = json.Unmarshal(p.Payload, &e)
154				sendEvent(ctx, events, e)
155			case pubsub.PayloadTypeMessage:
156				var e pubsub.Event[proto.Message]
157				_ = json.Unmarshal(p.Payload, &e)
158				sendEvent(ctx, events, e)
159			case pubsub.PayloadTypeSession:
160				var e pubsub.Event[proto.Session]
161				_ = json.Unmarshal(p.Payload, &e)
162				sendEvent(ctx, events, e)
163			case pubsub.PayloadTypeFile:
164				var e pubsub.Event[proto.File]
165				_ = json.Unmarshal(p.Payload, &e)
166				sendEvent(ctx, events, e)
167			case pubsub.PayloadTypeAgentEvent:
168				var e pubsub.Event[proto.AgentEvent]
169				_ = json.Unmarshal(p.Payload, &e)
170				sendEvent(ctx, events, e)
171			default:
172				slog.Warn("Unknown event type", "type", p.Type)
173				continue
174			}
175		}
176	}()
177
178	return events, nil
179}
180
181func sendEvent(ctx context.Context, evc chan any, ev any) {
182	select {
183	case evc <- ev:
184	case <-ctx.Done():
185		close(evc)
186		return
187	}
188}
189
190// GetLSPDiagnostics retrieves LSP diagnostics for a specific LSP client.
191func (c *Client) GetLSPDiagnostics(ctx context.Context, id string, lspName string) (map[protocol.DocumentURI][]protocol.Diagnostic, error) {
192	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/lsps/%s/diagnostics", id, lspName), nil, nil)
193	if err != nil {
194		return nil, fmt.Errorf("failed to get LSP diagnostics: %w", err)
195	}
196	defer rsp.Body.Close()
197	if rsp.StatusCode != http.StatusOK {
198		return nil, fmt.Errorf("failed to get LSP diagnostics: status code %d", rsp.StatusCode)
199	}
200	var diagnostics map[protocol.DocumentURI][]protocol.Diagnostic
201	if err := json.NewDecoder(rsp.Body).Decode(&diagnostics); err != nil {
202		return nil, fmt.Errorf("failed to decode LSP diagnostics: %w", err)
203	}
204	return diagnostics, nil
205}
206
207// GetLSPs retrieves the LSP client states for a workspace.
208func (c *Client) GetLSPs(ctx context.Context, id string) (map[string]proto.LSPClientInfo, error) {
209	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/lsps", id), nil, nil)
210	if err != nil {
211		return nil, fmt.Errorf("failed to get LSPs: %w", err)
212	}
213	defer rsp.Body.Close()
214	if rsp.StatusCode != http.StatusOK {
215		return nil, fmt.Errorf("failed to get LSPs: status code %d", rsp.StatusCode)
216	}
217	var lsps map[string]proto.LSPClientInfo
218	if err := json.NewDecoder(rsp.Body).Decode(&lsps); err != nil {
219		return nil, fmt.Errorf("failed to decode LSPs: %w", err)
220	}
221	return lsps, nil
222}
223
224// MCPGetStates retrieves the MCP client states for a workspace.
225func (c *Client) MCPGetStates(ctx context.Context, id string) (map[string]proto.MCPClientInfo, error) {
226	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/mcp/states", id), nil, nil)
227	if err != nil {
228		return nil, fmt.Errorf("failed to get MCP states: %w", err)
229	}
230	defer rsp.Body.Close()
231	if rsp.StatusCode != http.StatusOK {
232		return nil, fmt.Errorf("failed to get MCP states: status code %d", rsp.StatusCode)
233	}
234	var states map[string]proto.MCPClientInfo
235	if err := json.NewDecoder(rsp.Body).Decode(&states); err != nil {
236		return nil, fmt.Errorf("failed to decode MCP states: %w", err)
237	}
238	return states, nil
239}
240
241// MCPRefreshPrompts refreshes prompts for a named MCP client.
242func (c *Client) MCPRefreshPrompts(ctx context.Context, id, name string) error {
243	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/mcp/refresh-prompts", id), nil,
244		jsonBody(struct {
245			Name string `json:"name"`
246		}{Name: name}),
247		http.Header{"Content-Type": []string{"application/json"}})
248	if err != nil {
249		return fmt.Errorf("failed to refresh MCP prompts: %w", err)
250	}
251	defer rsp.Body.Close()
252	if rsp.StatusCode != http.StatusOK {
253		return fmt.Errorf("failed to refresh MCP prompts: status code %d", rsp.StatusCode)
254	}
255	return nil
256}
257
258// MCPRefreshResources refreshes resources for a named MCP client.
259func (c *Client) MCPRefreshResources(ctx context.Context, id, name string) error {
260	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/mcp/refresh-resources", id), nil,
261		jsonBody(struct {
262			Name string `json:"name"`
263		}{Name: name}),
264		http.Header{"Content-Type": []string{"application/json"}})
265	if err != nil {
266		return fmt.Errorf("failed to refresh MCP resources: %w", err)
267	}
268	defer rsp.Body.Close()
269	if rsp.StatusCode != http.StatusOK {
270		return fmt.Errorf("failed to refresh MCP resources: status code %d", rsp.StatusCode)
271	}
272	return nil
273}
274
275// GetAgentSessionQueuedPrompts retrieves the number of queued prompts for a
276// session.
277func (c *Client) GetAgentSessionQueuedPrompts(ctx context.Context, id string, sessionID string) (int, error) {
278	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/agent/sessions/%s/prompts/queued", id, sessionID), nil, nil)
279	if err != nil {
280		return 0, fmt.Errorf("failed to get session agent queued prompts: %w", err)
281	}
282	defer rsp.Body.Close()
283	if rsp.StatusCode != http.StatusOK {
284		return 0, fmt.Errorf("failed to get session agent queued prompts: status code %d", rsp.StatusCode)
285	}
286	var count int
287	if err := json.NewDecoder(rsp.Body).Decode(&count); err != nil {
288		return 0, fmt.Errorf("failed to decode session agent queued prompts: %w", err)
289	}
290	return count, nil
291}
292
293// ClearAgentSessionQueuedPrompts clears the queued prompts for a session.
294func (c *Client) ClearAgentSessionQueuedPrompts(ctx context.Context, id string, sessionID string) error {
295	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/agent/sessions/%s/prompts/clear", id, sessionID), nil, nil, nil)
296	if err != nil {
297		return fmt.Errorf("failed to clear session agent queued prompts: %w", err)
298	}
299	defer rsp.Body.Close()
300	if rsp.StatusCode != http.StatusOK {
301		return fmt.Errorf("failed to clear session agent queued prompts: status code %d", rsp.StatusCode)
302	}
303	return nil
304}
305
306// GetAgentInfo retrieves the agent status for a workspace.
307func (c *Client) GetAgentInfo(ctx context.Context, id string) (*proto.AgentInfo, error) {
308	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/agent", id), nil, nil)
309	if err != nil {
310		return nil, fmt.Errorf("failed to get agent status: %w", err)
311	}
312	defer rsp.Body.Close()
313	if rsp.StatusCode != http.StatusOK {
314		return nil, fmt.Errorf("failed to get agent status: status code %d", rsp.StatusCode)
315	}
316	var info proto.AgentInfo
317	if err := json.NewDecoder(rsp.Body).Decode(&info); err != nil {
318		return nil, fmt.Errorf("failed to decode agent status: %w", err)
319	}
320	return &info, nil
321}
322
323// UpdateAgent triggers an agent model update on the server.
324func (c *Client) UpdateAgent(ctx context.Context, id string) error {
325	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/agent/update", id), nil, nil, nil)
326	if err != nil {
327		return fmt.Errorf("failed to update agent: %w", err)
328	}
329	defer rsp.Body.Close()
330	if rsp.StatusCode != http.StatusOK {
331		return fmt.Errorf("failed to update agent: status code %d", rsp.StatusCode)
332	}
333	return nil
334}
335
336// SendMessage sends a message to the agent for a workspace.
337func (c *Client) SendMessage(ctx context.Context, id string, sessionID, prompt string, attachments ...message.Attachment) error {
338	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/agent", id), nil, jsonBody(proto.AgentMessage{
339		SessionID:   sessionID,
340		Prompt:      prompt,
341		Attachments: proto.AttachmentsFromMessage(attachments),
342	}), http.Header{"Content-Type": []string{"application/json"}})
343	if err != nil {
344		return fmt.Errorf("failed to send message to agent: %w", err)
345	}
346	defer rsp.Body.Close()
347	if rsp.StatusCode != http.StatusOK {
348		return fmt.Errorf("failed to send message to agent: status code %d", rsp.StatusCode)
349	}
350	return nil
351}
352
353// GetAgentSessionInfo retrieves the agent session info for a workspace.
354func (c *Client) GetAgentSessionInfo(ctx context.Context, id string, sessionID string) (*proto.AgentSession, error) {
355	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/agent/sessions/%s", id, sessionID), nil, nil)
356	if err != nil {
357		return nil, fmt.Errorf("failed to get session agent info: %w", err)
358	}
359	defer rsp.Body.Close()
360	if rsp.StatusCode != http.StatusOK {
361		return nil, fmt.Errorf("failed to get session agent info: status code %d", rsp.StatusCode)
362	}
363	var info proto.AgentSession
364	if err := json.NewDecoder(rsp.Body).Decode(&info); err != nil {
365		return nil, fmt.Errorf("failed to decode session agent info: %w", err)
366	}
367	return &info, nil
368}
369
370// AgentSummarizeSession requests a session summarization.
371func (c *Client) AgentSummarizeSession(ctx context.Context, id string, sessionID string) error {
372	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/agent/sessions/%s/summarize", id, sessionID), nil, nil, nil)
373	if err != nil {
374		return fmt.Errorf("failed to summarize session: %w", err)
375	}
376	defer rsp.Body.Close()
377	if rsp.StatusCode != http.StatusOK {
378		return fmt.Errorf("failed to summarize session: status code %d", rsp.StatusCode)
379	}
380	return nil
381}
382
383// InitiateAgentProcessing triggers agent initialization on the server.
384func (c *Client) InitiateAgentProcessing(ctx context.Context, id string) error {
385	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/agent/init", id), nil, nil, nil)
386	if err != nil {
387		return fmt.Errorf("failed to initiate session agent processing: %w", err)
388	}
389	defer rsp.Body.Close()
390	if rsp.StatusCode != http.StatusOK {
391		return fmt.Errorf("failed to initiate session agent processing: status code %d", rsp.StatusCode)
392	}
393	return nil
394}
395
396// ListMessages retrieves all messages for a session as proto types.
397func (c *Client) ListMessages(ctx context.Context, id string, sessionID string) ([]proto.Message, error) {
398	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/sessions/%s/messages", id, sessionID), nil, nil)
399	if err != nil {
400		return nil, fmt.Errorf("failed to get messages: %w", err)
401	}
402	defer rsp.Body.Close()
403	if rsp.StatusCode != http.StatusOK {
404		return nil, fmt.Errorf("failed to get messages: status code %d", rsp.StatusCode)
405	}
406	var msgs []proto.Message
407	if err := json.NewDecoder(rsp.Body).Decode(&msgs); err != nil && !errors.Is(err, io.EOF) {
408		return nil, fmt.Errorf("failed to decode messages: %w", err)
409	}
410	return msgs, nil
411}
412
413// GetSession retrieves a specific session as a proto type.
414func (c *Client) GetSession(ctx context.Context, id string, sessionID string) (*proto.Session, error) {
415	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/sessions/%s", id, sessionID), nil, nil)
416	if err != nil {
417		return nil, fmt.Errorf("failed to get session: %w", err)
418	}
419	defer rsp.Body.Close()
420	if rsp.StatusCode != http.StatusOK {
421		return nil, fmt.Errorf("failed to get session: status code %d", rsp.StatusCode)
422	}
423	var sess proto.Session
424	if err := json.NewDecoder(rsp.Body).Decode(&sess); err != nil {
425		return nil, fmt.Errorf("failed to decode session: %w", err)
426	}
427	return &sess, nil
428}
429
430// ListSessionHistoryFiles retrieves history files for a session as proto types.
431func (c *Client) ListSessionHistoryFiles(ctx context.Context, id string, sessionID string) ([]proto.File, error) {
432	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/sessions/%s/history", id, sessionID), nil, nil)
433	if err != nil {
434		return nil, fmt.Errorf("failed to get session history files: %w", err)
435	}
436	defer rsp.Body.Close()
437	if rsp.StatusCode != http.StatusOK {
438		return nil, fmt.Errorf("failed to get session history files: status code %d", rsp.StatusCode)
439	}
440	var files []proto.File
441	if err := json.NewDecoder(rsp.Body).Decode(&files); err != nil {
442		return nil, fmt.Errorf("failed to decode session history files: %w", err)
443	}
444	return files, nil
445}
446
447// CreateSession creates a new session in a workspace as a proto type.
448func (c *Client) CreateSession(ctx context.Context, id string, title string) (*proto.Session, error) {
449	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/sessions", id), nil, jsonBody(proto.Session{Title: title}), http.Header{"Content-Type": []string{"application/json"}})
450	if err != nil {
451		return nil, fmt.Errorf("failed to create session: %w", err)
452	}
453	defer rsp.Body.Close()
454	if rsp.StatusCode != http.StatusOK {
455		return nil, fmt.Errorf("failed to create session: status code %d", rsp.StatusCode)
456	}
457	var sess proto.Session
458	if err := json.NewDecoder(rsp.Body).Decode(&sess); err != nil {
459		return nil, fmt.Errorf("failed to decode session: %w", err)
460	}
461	return &sess, nil
462}
463
464// ListSessions lists all sessions in a workspace as proto types.
465func (c *Client) ListSessions(ctx context.Context, id string) ([]proto.Session, error) {
466	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/sessions", id), nil, nil)
467	if err != nil {
468		return nil, fmt.Errorf("failed to get sessions: %w", err)
469	}
470	defer rsp.Body.Close()
471	if rsp.StatusCode != http.StatusOK {
472		return nil, fmt.Errorf("failed to get sessions: status code %d", rsp.StatusCode)
473	}
474	var sessions []proto.Session
475	if err := json.NewDecoder(rsp.Body).Decode(&sessions); err != nil {
476		return nil, fmt.Errorf("failed to decode sessions: %w", err)
477	}
478	return sessions, nil
479}
480
481// GrantPermission grants a permission on a workspace.
482func (c *Client) GrantPermission(ctx context.Context, id string, req proto.PermissionGrant) error {
483	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/permissions/grant", id), nil, jsonBody(req), http.Header{"Content-Type": []string{"application/json"}})
484	if err != nil {
485		return fmt.Errorf("failed to grant permission: %w", err)
486	}
487	defer rsp.Body.Close()
488	if rsp.StatusCode != http.StatusOK {
489		return fmt.Errorf("failed to grant permission: status code %d", rsp.StatusCode)
490	}
491	return nil
492}
493
494// SetPermissionsSkipRequests sets the skip-requests flag for a workspace.
495func (c *Client) SetPermissionsSkipRequests(ctx context.Context, id string, skip bool) error {
496	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/permissions/skip", id), nil, jsonBody(proto.PermissionSkipRequest{Skip: skip}), http.Header{"Content-Type": []string{"application/json"}})
497	if err != nil {
498		return fmt.Errorf("failed to set permissions skip requests: %w", err)
499	}
500	defer rsp.Body.Close()
501	if rsp.StatusCode != http.StatusOK {
502		return fmt.Errorf("failed to set permissions skip requests: status code %d", rsp.StatusCode)
503	}
504	return nil
505}
506
507// GetPermissionsSkipRequests retrieves the skip-requests flag for a workspace.
508func (c *Client) GetPermissionsSkipRequests(ctx context.Context, id string) (bool, error) {
509	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/permissions/skip", id), nil, nil)
510	if err != nil {
511		return false, fmt.Errorf("failed to get permissions skip requests: %w", err)
512	}
513	defer rsp.Body.Close()
514	if rsp.StatusCode != http.StatusOK {
515		return false, fmt.Errorf("failed to get permissions skip requests: status code %d", rsp.StatusCode)
516	}
517	var skip proto.PermissionSkipRequest
518	if err := json.NewDecoder(rsp.Body).Decode(&skip); err != nil {
519		return false, fmt.Errorf("failed to decode permissions skip requests: %w", err)
520	}
521	return skip.Skip, nil
522}
523
524// GetConfig retrieves the workspace-specific configuration.
525func (c *Client) GetConfig(ctx context.Context, id string) (*config.Config, error) {
526	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/config", id), nil, nil)
527	if err != nil {
528		return nil, fmt.Errorf("failed to get config: %w", err)
529	}
530	defer rsp.Body.Close()
531	if rsp.StatusCode != http.StatusOK {
532		return nil, fmt.Errorf("failed to get config: status code %d", rsp.StatusCode)
533	}
534	var cfg config.Config
535	if err := json.NewDecoder(rsp.Body).Decode(&cfg); err != nil {
536		return nil, fmt.Errorf("failed to decode config: %w", err)
537	}
538	return &cfg, nil
539}
540
541func jsonBody(v any) *bytes.Buffer {
542	b := new(bytes.Buffer)
543	m, _ := json.Marshal(v)
544	b.Write(m)
545	return b
546}
547
548// SaveSession updates a session in a workspace, returning a proto type.
549func (c *Client) SaveSession(ctx context.Context, id string, sess proto.Session) (*proto.Session, error) {
550	rsp, err := c.put(ctx, fmt.Sprintf("/workspaces/%s/sessions/%s", id, sess.ID), nil, jsonBody(sess), http.Header{"Content-Type": []string{"application/json"}})
551	if err != nil {
552		return nil, fmt.Errorf("failed to save session: %w", err)
553	}
554	defer rsp.Body.Close()
555	if rsp.StatusCode != http.StatusOK {
556		return nil, fmt.Errorf("failed to save session: status code %d", rsp.StatusCode)
557	}
558	var saved proto.Session
559	if err := json.NewDecoder(rsp.Body).Decode(&saved); err != nil {
560		return nil, fmt.Errorf("failed to decode session: %w", err)
561	}
562	return &saved, nil
563}
564
565// DeleteSession deletes a session from a workspace.
566func (c *Client) DeleteSession(ctx context.Context, id string, sessionID string) error {
567	rsp, err := c.delete(ctx, fmt.Sprintf("/workspaces/%s/sessions/%s", id, sessionID), nil, nil)
568	if err != nil {
569		return fmt.Errorf("failed to delete session: %w", err)
570	}
571	defer rsp.Body.Close()
572	if rsp.StatusCode != http.StatusOK {
573		return fmt.Errorf("failed to delete session: status code %d", rsp.StatusCode)
574	}
575	return nil
576}
577
578// ListUserMessages retrieves user-role messages for a session as proto types.
579func (c *Client) ListUserMessages(ctx context.Context, id string, sessionID string) ([]proto.Message, error) {
580	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/sessions/%s/messages/user", id, sessionID), nil, nil)
581	if err != nil {
582		return nil, fmt.Errorf("failed to get user messages: %w", err)
583	}
584	defer rsp.Body.Close()
585	if rsp.StatusCode != http.StatusOK {
586		return nil, fmt.Errorf("failed to get user messages: status code %d", rsp.StatusCode)
587	}
588	var msgs []proto.Message
589	if err := json.NewDecoder(rsp.Body).Decode(&msgs); err != nil && !errors.Is(err, io.EOF) {
590		return nil, fmt.Errorf("failed to decode user messages: %w", err)
591	}
592	return msgs, nil
593}
594
595// ListAllUserMessages retrieves all user-role messages across sessions as proto types.
596func (c *Client) ListAllUserMessages(ctx context.Context, id string) ([]proto.Message, error) {
597	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/messages/user", id), nil, nil)
598	if err != nil {
599		return nil, fmt.Errorf("failed to get all user messages: %w", err)
600	}
601	defer rsp.Body.Close()
602	if rsp.StatusCode != http.StatusOK {
603		return nil, fmt.Errorf("failed to get all user messages: status code %d", rsp.StatusCode)
604	}
605	var msgs []proto.Message
606	if err := json.NewDecoder(rsp.Body).Decode(&msgs); err != nil && !errors.Is(err, io.EOF) {
607		return nil, fmt.Errorf("failed to decode all user messages: %w", err)
608	}
609	return msgs, nil
610}
611
612// CancelAgentSession cancels an ongoing agent operation for a session.
613func (c *Client) CancelAgentSession(ctx context.Context, id string, sessionID string) error {
614	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/agent/sessions/%s/cancel", id, sessionID), nil, nil, nil)
615	if err != nil {
616		return fmt.Errorf("failed to cancel agent session: %w", err)
617	}
618	defer rsp.Body.Close()
619	if rsp.StatusCode != http.StatusOK {
620		return fmt.Errorf("failed to cancel agent session: status code %d", rsp.StatusCode)
621	}
622	return nil
623}
624
625// GetAgentSessionQueuedPromptsList retrieves the list of queued prompt
626// strings for a session.
627func (c *Client) GetAgentSessionQueuedPromptsList(ctx context.Context, id string, sessionID string) ([]string, error) {
628	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/agent/sessions/%s/prompts/list", id, sessionID), nil, nil)
629	if err != nil {
630		return nil, fmt.Errorf("failed to get queued prompts list: %w", err)
631	}
632	defer rsp.Body.Close()
633	if rsp.StatusCode != http.StatusOK {
634		return nil, fmt.Errorf("failed to get queued prompts list: status code %d", rsp.StatusCode)
635	}
636	var prompts []string
637	if err := json.NewDecoder(rsp.Body).Decode(&prompts); err != nil {
638		return nil, fmt.Errorf("failed to decode queued prompts list: %w", err)
639	}
640	return prompts, nil
641}
642
643// GetDefaultSmallModel retrieves the default small model for a provider.
644func (c *Client) GetDefaultSmallModel(ctx context.Context, id string, providerID string) (*config.SelectedModel, error) {
645	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/agent/default-small-model", id), url.Values{"provider_id": []string{providerID}}, nil)
646	if err != nil {
647		return nil, fmt.Errorf("failed to get default small model: %w", err)
648	}
649	defer rsp.Body.Close()
650	if rsp.StatusCode != http.StatusOK {
651		return nil, fmt.Errorf("failed to get default small model: status code %d", rsp.StatusCode)
652	}
653	var model config.SelectedModel
654	if err := json.NewDecoder(rsp.Body).Decode(&model); err != nil {
655		return nil, fmt.Errorf("failed to decode default small model: %w", err)
656	}
657	return &model, nil
658}
659
660// FileTrackerRecordRead records a file read for a session.
661func (c *Client) FileTrackerRecordRead(ctx context.Context, id string, sessionID, path string) error {
662	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/filetracker/read", id), nil, jsonBody(struct {
663		SessionID string `json:"session_id"`
664		Path      string `json:"path"`
665	}{SessionID: sessionID, Path: path}), http.Header{"Content-Type": []string{"application/json"}})
666	if err != nil {
667		return fmt.Errorf("failed to record file read: %w", err)
668	}
669	defer rsp.Body.Close()
670	if rsp.StatusCode != http.StatusOK {
671		return fmt.Errorf("failed to record file read: status code %d", rsp.StatusCode)
672	}
673	return nil
674}
675
676// FileTrackerLastReadTime returns the last read time for a file in a
677// session.
678func (c *Client) FileTrackerLastReadTime(ctx context.Context, id string, sessionID, path string) (time.Time, error) {
679	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/filetracker/lastread", id), url.Values{
680		"session_id": []string{sessionID},
681		"path":       []string{path},
682	}, nil)
683	if err != nil {
684		return time.Time{}, fmt.Errorf("failed to get last read time: %w", err)
685	}
686	defer rsp.Body.Close()
687	if rsp.StatusCode != http.StatusOK {
688		return time.Time{}, fmt.Errorf("failed to get last read time: status code %d", rsp.StatusCode)
689	}
690	var t time.Time
691	if err := json.NewDecoder(rsp.Body).Decode(&t); err != nil {
692		return time.Time{}, fmt.Errorf("failed to decode last read time: %w", err)
693	}
694	return t, nil
695}
696
697// FileTrackerListReadFiles returns the list of read files for a session.
698func (c *Client) FileTrackerListReadFiles(ctx context.Context, id string, sessionID string) ([]string, error) {
699	rsp, err := c.get(ctx, fmt.Sprintf("/workspaces/%s/sessions/%s/filetracker/files", id, sessionID), nil, nil)
700	if err != nil {
701		return nil, fmt.Errorf("failed to get read files: %w", err)
702	}
703	defer rsp.Body.Close()
704	if rsp.StatusCode != http.StatusOK {
705		return nil, fmt.Errorf("failed to get read files: status code %d", rsp.StatusCode)
706	}
707	var files []string
708	if err := json.NewDecoder(rsp.Body).Decode(&files); err != nil {
709		return nil, fmt.Errorf("failed to decode read files: %w", err)
710	}
711	return files, nil
712}
713
714// LSPStart starts an LSP server for a path.
715func (c *Client) LSPStart(ctx context.Context, id string, path string) error {
716	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/lsps/start", id), nil, jsonBody(struct {
717		Path string `json:"path"`
718	}{Path: path}), http.Header{"Content-Type": []string{"application/json"}})
719	if err != nil {
720		return fmt.Errorf("failed to start LSP: %w", err)
721	}
722	defer rsp.Body.Close()
723	if rsp.StatusCode != http.StatusOK {
724		return fmt.Errorf("failed to start LSP: status code %d", rsp.StatusCode)
725	}
726	return nil
727}
728
729// LSPStopAll stops all LSP servers for a workspace.
730func (c *Client) LSPStopAll(ctx context.Context, id string) error {
731	rsp, err := c.post(ctx, fmt.Sprintf("/workspaces/%s/lsps/stop", id), nil, nil, nil)
732	if err != nil {
733		return fmt.Errorf("failed to stop LSPs: %w", err)
734	}
735	defer rsp.Body.Close()
736	if rsp.StatusCode != http.StatusOK {
737		return fmt.Errorf("failed to stop LSPs: status code %d", rsp.StatusCode)
738	}
739	return nil
740}