// SPDX-FileCopyrightText: Amolith <amolith@secluded.site>
//
// SPDX-License-Identifier: AGPL-3.0-or-later

package person

import (
	"encoding/json"
	"fmt"

	"git.secluded.site/go-lunatask"
	"git.secluded.site/lune/internal/client"
	"git.secluded.site/lune/internal/ui"
	"git.secluded.site/lune/internal/validate"
	"github.com/spf13/cobra"
)

// ShowCmd displays a person by ID. Exported for potential use by shortcuts.
var ShowCmd = &cobra.Command{
	Use:   "show ID",
	Short: "Show person details",
	Long: `Show detailed information for a person.

Accepts a UUID or lunatask:// deep link.

Note: Due to end-to-end encryption, names are not available
through the API. Only metadata is shown.`,
	Args: cobra.ExactArgs(1),
	RunE: runShow,
}

func init() {
	ShowCmd.Flags().Bool("json", false, "Output as JSON")
}

func runShow(cmd *cobra.Command, args []string) error {
	id, err := validate.Reference(args[0])
	if err != nil {
		return err
	}

	apiClient, err := client.New()
	if err != nil {
		return err
	}

	person, err := ui.Spin("Fetching person…", func() (*lunatask.Person, error) {
		return apiClient.GetPerson(cmd.Context(), id)
	})
	if err != nil {
		return err
	}

	if mustGetBoolFlag(cmd, "json") {
		return outputPersonJSON(cmd, person)
	}

	return printPersonDetails(cmd, person)
}

func outputPersonJSON(cmd *cobra.Command, person *lunatask.Person) error {
	enc := json.NewEncoder(cmd.OutOrStdout())
	enc.SetIndent("", "  ")

	if err := enc.Encode(person); err != nil {
		return fmt.Errorf("encoding JSON: %w", err)
	}

	return nil
}

func printPersonDetails(cmd *cobra.Command, person *lunatask.Person) error {
	link, _ := lunatask.BuildDeepLink(lunatask.ResourcePerson, person.ID)

	fmt.Fprintf(cmd.OutOrStdout(), "%s\n", ui.H1.Render("Person"))
	fmt.Fprintf(cmd.OutOrStdout(), "  ID:   %s\n", person.ID)
	fmt.Fprintf(cmd.OutOrStdout(), "  Link: %s\n", link)

	if person.RelationshipStrength != nil {
		fmt.Fprintf(cmd.OutOrStdout(), "  Relationship: %s\n", *person.RelationshipStrength)
	}

	if len(person.Sources) > 0 {
		fmt.Fprintf(cmd.OutOrStdout(), "  Sources:\n")

		for _, src := range person.Sources {
			fmt.Fprintf(cmd.OutOrStdout(), "    - %s: %s\n", src.Source, src.SourceID)
		}
	}

	fmt.Fprintf(cmd.OutOrStdout(), "  Created: %s\n", ui.FormatDate(person.CreatedAt))
	fmt.Fprintf(cmd.OutOrStdout(), "  Updated: %s\n", ui.FormatDate(person.UpdatedAt))

	return nil
}