/*
 * @Author: liuJie
 * @Date: 2026-01-30 19:47:19
 * @LastEditors: liuJie
 * @LastEditTime: 2026-01-30 20:20:59
 * @Describe: 单独抽离换肤
 */
import { ref, onMounted, onBeforeUnmount } from 'vue'
import * as monaco from 'monaco-editor'

type EditorTheme = 'vs-light' | 'vs-dark'
type ThemeClass = 'light' | 'dark'

interface UseLocalEditorThemeOptions {
    defaultTheme?: EditorTheme
    autoToggleTheme?: boolean
}

export function useLocalEditorTheme(
    options: UseLocalEditorThemeOptions = {}
) {
    const {
        defaultTheme = 'vs-light',
        autoToggleTheme = false
    } = options

    /** 当前 Monaco 主题（语法） */
    const monacoTheme = ref<EditorTheme>(defaultTheme)

    /** 当前 UI 主题（样式） */
    const themeClass = ref<ThemeClass>(
        defaultTheme === 'vs-dark' ? 'dark' : 'light'
    )

    /** 系统暗黑监听 */
    let mediaQuery: MediaQueryList | null = null

    const applyTheme = (theme: EditorTheme) => {
        monacoTheme.value = theme
        themeClass.value = theme === 'vs-dark' ? 'dark' : 'light'

        monaco.editor.setTheme(theme)
    }

    /** 手动切换 */
    const toggleTheme = () => {
        applyTheme(
            monacoTheme.value === 'vs-light' ? 'vs-dark' : 'vs-light'
        )
    }

    /** 系统主题变化 */
    const handleSystemThemeChange = (e: MediaQueryListEvent) => {
        applyTheme(e.matches ? 'vs-dark' : 'vs-light')
    }

    onMounted(() => {
        applyTheme(defaultTheme)

        if (autoToggleTheme) {
            mediaQuery = window.matchMedia('(prefers-color-scheme: dark)')
            applyTheme(mediaQuery.matches ? 'vs-dark' : 'vs-light')
            mediaQuery.addEventListener('change', handleSystemThemeChange)
        }
    })

    onBeforeUnmount(() => {
        if (mediaQuery) {
            mediaQuery.removeEventListener('change', handleSystemThemeChange)
        }
    })

    return {
        monacoTheme,
        themeClass,
        toggleTheme,
        setTheme: applyTheme
    }
}