package services

import (
	"cmbone/internal/models"
	"fmt"
	"strings"
)

const (
	settingTypeSelect  = "select"
	settingTypeBoolean = "boolean"
	settingTypeNumber  = "number"
	settingTypeText    = "text"
	settingTypePath    = "path"
	settingTypeHotkey  = "hotkey"
)

var settingGroups = []models.AppSettingGroup{
	{Category: "appearance", Label: "外观与语言", Description: "主题和界面语言设置"},
	{Category: "window", Label: "窗口行为", Description: "主窗口默认尺寸、启动状态和恢复策略"},
	{Category: "shortcuts", Label: "快捷键", Description: "全局快捷键默认值和入口说明"},
	{Category: "data", Label: "数据目录", Description: "本地数据库、输出文件和缓存目录策略"},
	{Category: "logs", Label: "日志策略", Description: "审计日志和运行日志的级别与保留周期"},
	{Category: "auth", Label: "登录", Description: "登录 provider 和本地演示账号配置"},
}

func settingsDefinitions() []models.AppSettingDefinition {
	return []models.AppSettingDefinition{
		{
			Key:          "theme.mode",
			Category:     "appearance",
			Label:        "主题模式",
			Type:         settingTypeSelect,
			DefaultValue: "light",
			Description:  "主窗口和组件库主题，systemdefault 表示跟随系统。",
			Options: []models.AppSettingOption{
				{Value: "light", Label: "亮色模式"},
				{Value: "dark", Label: "暗色模式"},
				{Value: "systemdefault", Label: "跟随系统"},
			},
		},
		{
			Key:          "language",
			Category:     "appearance",
			Label:        "界面语言",
			Type:         settingTypeSelect,
			DefaultValue: "zh",
			Description:  "应用界面语言，同时影响托盘菜单语言。",
			Options: []models.AppSettingOption{
				{Value: "zh", Label: "简体中文"},
				{Value: "en", Label: "English"},
				{Value: "zh-HK", Label: "繁體中文"},
			},
		},
		{
			Key:          "window.start_state",
			Category:     "window",
			Label:        "启动窗口状态",
			Type:         settingTypeSelect,
			DefaultValue: "normal",
			Description:  "主窗口启动时恢复的窗口状态。",
			Options: []models.AppSettingOption{
				{Value: "normal", Label: "普通窗口"},
				{Value: "maximized", Label: "最大化"},
			},
		},
		{
			Key:          "window.width",
			Category:     "window",
			Label:        "默认宽度",
			Type:         settingTypeNumber,
			DefaultValue: "1280",
			Description:  "主窗口普通状态下保存的宽度。",
		},
		{
			Key:          "window.height",
			Category:     "window",
			Label:        "默认高度",
			Type:         settingTypeNumber,
			DefaultValue: "800",
			Description:  "主窗口普通状态下保存的高度。",
		},
		{
			Key:          "window.remember_state",
			Category:     "window",
			Label:        "记住窗口状态",
			Type:         settingTypeBoolean,
			DefaultValue: "true",
			Description:  "保存并恢复主窗口尺寸和最大化状态。",
		},
		{
			Key:          "shortcut.open_second_window",
			Category:     "shortcuts",
			Label:        "打开第二窗口",
			Type:         settingTypeHotkey,
			DefaultValue: "Alt+P",
			Description:  "对应 hotkeys 表 target=1，实际注册由 HotkeyService 管理。",
			ReadOnly:     true,
		},
		{
			Key:          "shortcut.open_main_window",
			Category:     "shortcuts",
			Label:        "打开主窗口",
			Type:         settingTypeHotkey,
			DefaultValue: "Alt+M",
			Description:  "对应 hotkeys 表 target=2，实际注册由 HotkeyService 管理。",
			ReadOnly:     true,
		},
		{
			Key:          "data.root_mode",
			Category:     "data",
			Label:        "数据目录策略",
			Type:         settingTypeSelect,
			DefaultValue: "app_config_dir",
			Description:  "默认使用系统用户配置目录下的 cmbone 目录。",
			Options: []models.AppSettingOption{
				{Value: "app_config_dir", Label: "系统配置目录"},
				{Value: "custom", Label: "自定义目录"},
			},
		},
		{
			Key:          "data.custom_directory",
			Category:     "data",
			Label:        "自定义数据目录",
			Type:         settingTypePath,
			DefaultValue: "",
			Description:  "当数据目录策略为 custom 时使用；为空表示未配置。",
		},
		{
			Key:          "logs.level",
			Category:     "logs",
			Label:        "运行日志级别",
			Type:         settingTypeSelect,
			DefaultValue: "info",
			Description:  "运行日志默认记录级别。",
			Options: []models.AppSettingOption{
				{Value: "debug", Label: "Debug"},
				{Value: "info", Label: "Info"},
				{Value: "warn", Label: "Warn"},
				{Value: "error", Label: "Error"},
			},
		},
		{
			Key:          "logs.audit_retention_days",
			Category:     "logs",
			Label:        "审计日志保留天数",
			Type:         settingTypeNumber,
			DefaultValue: "180",
			Description:  "审计日志默认保留周期。",
		},
		{
			Key:          "logs.app_retention_days",
			Category:     "logs",
			Label:        "运行日志保留天数",
			Type:         settingTypeNumber,
			DefaultValue: "30",
			Description:  "运行日志默认保留周期。",
		},
		{
			Key:          "auth.provider",
			Category:     "auth",
			Label:        "登录 provider",
			Type:         settingTypeSelect,
			DefaultValue: "local",
			Description:  "local 用于模板演示，remote 是真实后端预留入口。",
			Options: []models.AppSettingOption{
				{Value: "local", Label: "Local"},
				{Value: "remote", Label: "Remote"},
			},
		},
		{
			Key:          "auth.local.username",
			Category:     "auth",
			Label:        "本地演示账号",
			Type:         settingTypeText,
			DefaultValue: "admin",
			Description:  "本地固定账号 provider 的演示用户名。",
			ReadOnly:     true,
		},
		{
			Key:          "auth.local.password_salt",
			Category:     "auth",
			Label:        "本地密码盐",
			Type:         settingTypeText,
			DefaultValue: "cmbone-local-auth-v1",
			Description:  "本地演示账号密码盐。",
			ReadOnly:     true,
		},
		{
			Key:          "auth.local.password_hash",
			Category:     "auth",
			Label:        "本地密码哈希",
			Type:         settingTypeText,
			DefaultValue: "3e0bfcda604b19fef1f596bcade7469ff1ab8b427fdc998e9a8216101b002f4a",
			Description:  "本地演示账号密码哈希。",
			ReadOnly:     true,
		},
	}
}

func settingDefinitionByKey(key string) (models.AppSettingDefinition, bool) {
	for _, definition := range settingsDefinitions() {
		if definition.Key == key {
			return definition, true
		}
	}
	return models.AppSettingDefinition{}, false
}

func defaultAppConfigSQL() string {
	var builder strings.Builder
	for _, definition := range settingsDefinitions() {
		builder.WriteString(fmt.Sprintf(
			"INSERT OR IGNORE INTO appconfig (key, type, value, description) VALUES (%s, %s, %s, %s);\n",
			sqlString(definition.Key),
			sqlString(definition.Type),
			sqlString(definition.DefaultValue),
			sqlString(definition.Description),
		))
	}
	return builder.String()
}

func appConfigDataMigrationSQL() string {
	return `
	UPDATE appconfig
	SET value = 'true',
		description = '保存并恢复主窗口尺寸和最大化状态。'
	WHERE key = 'window.remember_state'
		AND value = 'false'
		AND description = '保存主窗口尺寸和最大化状态，T-015 使用该配置。';
	`
}

func sqlString(value string) string {
	return "'" + strings.ReplaceAll(value, "'", "''") + "'"
}