package store

import (
	"encoding/json"
	"fmt"
	"os"
	"path/filepath"

	"superwork-tui/internal/config"
)

// ProfileRow is one row in the profiles grid: a key and its per-profile values.
type ProfileRow struct {
	Key    string            `json:"key"`
	Values map[string]string `json:"values"`
}

// ProfilesData is the workspace-level profiles grid persisted to profiles.json.
type ProfilesData struct {
	Profiles []string     `json:"profiles"`
	Rows     []ProfileRow `json:"rows"`
}

func profilesFile(workspaceRoot string) string {
	return filepath.Join(config.SpxDir(workspaceRoot), "profiles.json")
}

// ReadProfiles reads the workspace profiles grid.
// A missing or malformed file returns default data without error.
func ReadProfiles(workspaceRoot string) (ProfilesData, error) {
	raw, err := os.ReadFile(profilesFile(workspaceRoot))
	if err != nil {
		return ProfilesData{
			Profiles: []string{"dev", "prod"},
			Rows:     []ProfileRow{},
		}, nil
	}
	var data ProfilesData
	if err := json.Unmarshal(raw, &data); err != nil {
		return ProfilesData{
			Profiles: []string{"dev", "prod"},
			Rows:     []ProfileRow{},
		}, nil
	}
	if len(data.Profiles) == 0 {
		data.Profiles = []string{"dev", "prod"}
	}
	if data.Rows == nil {
		data.Rows = []ProfileRow{}
	}
	return data, nil
}

// WriteProfiles persists the profiles grid. Creates .spx if needed.
func WriteProfiles(workspaceRoot string, data ProfilesData) error {
	if err := os.MkdirAll(config.SpxDir(workspaceRoot), 0o755); err != nil {
		return fmt.Errorf("create .spx dir: %w", err)
	}
	b, err := json.MarshalIndent(data, "", "  ")
	if err != nil {
		return fmt.Errorf("marshal profiles: %w", err)
	}
	if err := os.WriteFile(profilesFile(workspaceRoot), append(b, '\n'), 0o644); err != nil {
		return fmt.Errorf("write profiles: %w", err)
	}
	return nil
}