package presenter

import (
	"fmt"
	"io"

	"gitea.oblak.solutions/dimitar/gitFlow/pkg/status"
)

// CompactFormatter renders one line per repository with color-coded status
// symbols, aimed at dense terminals and dashboards.
type CompactFormatter struct {
	opts Options
}

// Format implements Formatter.
func (c *CompactFormatter) Format(w io.Writer, result status.ScanResult) error {
	r := newRendererTheme(c.opts.Color, c.opts.Theme, w)
	for _, repo := range result.Repos {
		sym := statusSymbol(repo.Status)
		line := r.paint(repo.Status, sym) + " " + shortPath(repo.Path)
		if repo.Branch != "" && !repo.Detached {
			line += " (" + repo.Branch + ")"
		}
		if repo.AheadBy > 0 || repo.BehindBy > 0 {
			line += fmt.Sprintf(" +%d/-%d", repo.AheadBy, repo.BehindBy)
		}
		if n := repo.FileCount(); n > 0 {
			line += fmt.Sprintf(" %d change(s)", n)
		}
		if repo.Status == status.StatusError {
			line += ": " + repo.Error
		}
		if _, err := fmt.Fprintln(w, line); err != nil {
			return err
		}
	}
	return nil
}

// StatusSymbolFor returns a single-character status marker for the given
// status, shared by the compact formatter and the TUI.
func StatusSymbolFor(s status.RepoStatus) string {
	return statusSymbol(s)
}

// statusSymbol returns a single-character status marker.
func statusSymbol(s status.RepoStatus) string {
	switch s {
	case status.StatusClean:
		return "✓"
	case status.StatusModified:
		return "✗"
	case status.StatusAhead:
		return "↑"
	case status.StatusBehind:
		return "↓"
	case status.StatusDiverged:
		return "⇄"
	case status.StatusDetached:
		return "◉"
	case status.StatusBare:
		return "▢"
	case status.StatusError:
		return "!"
	default:
		return "?"
	}
}