import { defineConfig } from 'vite'
import type { Plugin } from 'vite'
import vue from '@vitejs/plugin-vue'
import { mkdirSync, readdirSync, writeFileSync } from 'node:fs'
import { resolve } from 'node:path'

function presetManifestPlugin(): Plugin {
  let presetDirectory = ''
  const updateManifest = () => {
    if (!presetDirectory) return
    mkdirSync(presetDirectory, { recursive: true })
    const presets = readdirSync(presetDirectory)
      .filter((file) => file.toLowerCase().endsWith('.json') && file !== 'index.json')
      .sort((a, b) => a.localeCompare(b, 'zh-CN'))
      .map((file) => ({ name: file.replace(/\.json$/i, ''), file }))
    writeFileSync(resolve(presetDirectory, 'index.json'), `${JSON.stringify(presets, null, 2)}\n`)
  }
  return {
    name: 'spine-particle-preset-manifest',
    configResolved(config) {
      presetDirectory = resolve(config.root, 'public/Preset')
      updateManifest()
    },
    buildStart() {
      updateManifest()
    },
    configureServer(server) {
      server.watcher.add(presetDirectory)
      const refresh = (file: string) => {
        if (file.startsWith(presetDirectory) && file.toLowerCase().endsWith('.json')) updateManifest()
      }
      server.watcher.on('add', refresh)
      server.watcher.on('unlink', refresh)
    },
  }
}

export default defineConfig({
  plugins: [vue(), presetManifestPlugin()],
  server: {
    port: 5173,
    host: true,
  },
  resolve: {
    // 强制 spine-core 只解析到同一份模块，避免 spine-pixi-v7 与应用各自 import
    // 形成两份类实例，导致 `attachment instanceof RegionAttachment` 判 false、Spine 渲染空白。
    dedupe: ['@esotericsoftware/spine-core', '@spine-particle/spine-core-4.3'],
  },
  // 让 node_modules 里的 ESM 依赖能直接 work
  // 必须同时预打包 spine-core 与 spine-pixi-v7：否则 spine-core 会存在两份类实例，
  // 使 spine-pixi-v7 里 `attachment instanceof RegionAttachment` 对项目解析的 attachment 判 false，
  // 导致 renderMeshes 不生成任何网格、Spine 渲染空白。
  optimizeDeps: {
    include: ['@esotericsoftware/spine-core', '@esotericsoftware/spine-pixi-v7'],
    exclude: ['@spine-particle/spine-core-4.3', '@spine-particle/spine-pixi-v7-4.3'],
  },
})