package main

// kind_icon.go：启动台可识别 kind 的默认图标（仅本地，不同步；超管维护）。

import (
	"encoding/base64"
	"errors"
	"fmt"
	"strings"

	"github.com/wailsapp/wails/v3/pkg/application"
)

var knownLaunchKinds = []string{
	"node", "go", "python", "java", "php", "dotnet", "exe", "mysql", "redis", "nginx", "web", "other",
}

func isKnownLaunchKind(k string) bool {
	for _, x := range knownLaunchKinds {
		if x == k {
			return true
		}
	}
	return false
}

func (s *Store) ListKindIcons() (map[string]string, error) {
	rows, e := s.db.Query(`SELECT kind,value FROM kind_icons WHERE value!=''`)
	if e != nil {
		return nil, e
	}
	defer rows.Close()
	m := map[string]string{}
	for rows.Next() {
		var k, v string
		if e = rows.Scan(&k, &v); e != nil {
			return nil, e
		}
		m[k] = v
	}
	return m, rows.Err()
}

func (s *Store) setKindIcon(kind, value string) error {
	now := nowRFC()
	_, e := s.db.Exec(`INSERT INTO kind_icons(kind,value,updated_at) VALUES(?,?,?)
		ON CONFLICT(kind) DO UPDATE SET value=excluded.value,updated_at=excluded.updated_at`, kind, value, now)
	return e
}

func (s *Store) clearKindIcon(kind string) error {
	_, e := s.db.Exec(`DELETE FROM kind_icons WHERE kind=?`, kind)
	return e
}

func (a *App) kindIconAdminGate() error {
	if a.syncUserID() != festivalAdminID {
		return errors.New("KIND_ICON_ADMIN_ONLY")
	}
	return nil
}

// ListKindIcons 返回 kind → dataURL。
func (a *App) ListKindIcons() (map[string]string, error) {
	if e := a.ready(); e != nil {
		return nil, e
	}
	return a.store.ListKindIcons()
}

// ListKnownLaunchKinds 固定种类列表（前端管理页用）。
func (a *App) ListKnownLaunchKinds() []string {
	return append([]string{}, knownLaunchKinds...)
}

// PickKindIcon 超管为某 kind 选择本地图片（缩放后存 dataURL）。
func (a *App) PickKindIcon(kind string) (string, error) {
	if e := a.ready(); e != nil {
		return "", e
	}
	if e := a.kindIconAdminGate(); e != nil {
		return "", e
	}
	kind = strings.TrimSpace(kind)
	if !isKnownLaunchKind(kind) {
		return "", errors.New("KIND_UNKNOWN")
	}
	p, e := application.Get().Dialog.OpenFile().
		SetTitle(a.localized("选择种类图标", "Choose kind icon")).
		AddFilter(a.localized("图片文件", "Image files"), "*.png;*.jpg;*.jpeg;*.gif;*.webp").
		PromptForSingleSelection()
	if e != nil || strings.TrimSpace(p) == "" {
		return "", e
	}
	data, mime, e := encodeAvatarFile(p)
	if e != nil {
		return "", e
	}
	dataURL := fmt.Sprintf("data:%s;base64,%s", mime, base64.StdEncoding.EncodeToString(data))
	if e := a.store.setKindIcon(kind, dataURL); e != nil {
		return "", e
	}
	return dataURL, nil
}

// ClearKindIcon 超管清除某 kind 默认图。
func (a *App) ClearKindIcon(kind string) error {
	if e := a.ready(); e != nil {
		return e
	}
	if e := a.kindIconAdminGate(); e != nil {
		return e
	}
	kind = strings.TrimSpace(kind)
	if !isKnownLaunchKind(kind) {
		return errors.New("KIND_UNKNOWN")
	}
	return a.store.clearKindIcon(kind)
}

// PickLaunchIconImage 为启动台选本地图片（base64 dataURL，不强制写库）。
func (a *App) PickLaunchIconImage() (string, error) {
	if e := a.ready(); e != nil {
		return "", e
	}
	p, e := application.Get().Dialog.OpenFile().
		SetTitle(a.localized("选择应用图标", "Choose app icon")).
		AddFilter(a.localized("图片文件", "Image files"), "*.png;*.jpg;*.jpeg;*.gif;*.webp").
		PromptForSingleSelection()
	if e != nil || strings.TrimSpace(p) == "" {
		return "", e
	}
	data, mime, e := encodeAvatarFile(p)
	if e != nil {
		return "", e
	}
	return fmt.Sprintf("data:%s;base64,%s", mime, base64.StdEncoding.EncodeToString(data)), nil
}

// SetLaunchAppIcon 写回已保存应用的图标（空字符串=清除）。
func (a *App) SetLaunchAppIcon(id int64, icon string) error {
	if e := a.ready(); e != nil {
		return e
	}
	if _, e := a.store.GetLaunchApp(id); e != nil {
		return errors.New("LAUNCH_APP_NOT_FOUND")
	}
	if e := a.store.setLaunchIcon(id, icon); e != nil {
		return e
	}
	a.emit("launchpad:changed", nil)
	return nil
}

// FetchProjectIcon 从项目目录抓取 icon 并写回 projects.icon。
func (a *App) FetchProjectIcon(id int64) (string, error) {
	if e := a.ready(); e != nil {
		return "", e
	}
	p, e := a.store.GetProject(id)
	if e != nil {
		return "", errors.New("PROJECT_NOT_FOUND")
	}
	u := iconFromDir(p.Path)
	if u == "" {
		return "", errors.New("ICON_NOT_FOUND")
	}
	if e := a.store.setProjectIcon(id, u); e != nil {
		return "", e
	}
	return u, nil
}

// SetProjectIcon 写入/清除项目图标。
func (a *App) SetProjectIcon(id int64, icon string) error {
	if e := a.ready(); e != nil {
		return e
	}
	if _, e := a.store.GetProject(id); e != nil {
		return errors.New("PROJECT_NOT_FOUND")
	}
	return a.store.setProjectIcon(id, icon)
}

func (s *Store) setProjectIcon(id int64, icon string) error {
	_, e := s.db.Exec(`UPDATE projects SET icon=?,updated_at=? WHERE id=?`, icon, now(), id)
	return e
}

// DetectProjectLaunchKind 根据项目路径推断启动台 kind（用于默认图标回退）。
func (a *App) DetectProjectLaunchKind(id int64) (string, error) {
	if e := a.ready(); e != nil {
		return "", e
	}
	p, e := a.store.GetProject(id)
	if e != nil {
		return "", errors.New("PROJECT_NOT_FOUND")
	}
	prof := detectLaunchProfile(p.Path)
	if prof.Kind == "" {
		return "other", nil
	}
	return prof.Kind, nil
}