import { Plugin, ViteDevServer } from 'vite'

export let devPlugin = () => {
  return {
    name: "dev-plugin",
    configureServer(server: ViteDevServer) {
      import('esbuild').then(instance => {
        instance.buildSync({
          entryPoints: ["./src/main/mainEntry.ts"],
          bundle: true,
          platform: 'node',
          outfile: "./dist/mainEntry.js",
          external: ["electron"]
        })
      })

      server.httpServer?.once("listening", () => {
        import("child_process").then(({ spawn }) => {
          let addressInfo = server.httpServer?.address() as { address: string; port: number }
          if (addressInfo) {
            let httpAddress = `http://${addressInfo.address}:${addressInfo.port}`
            import('electron').then(electron => {
              let electronProcess = spawn('electron', ['./dist/mainEntry.js', httpAddress], {
                cwd: process.cwd(),
                stdio: "inherit",
                shell: true
              })
              electronProcess.on("close", () => {
                server.close()
                process.exit()
              })
            })
          }
        })
      })
    }
  }
}

export const getReplacer = () => {
  const externalModels = ["os", "fs", "path", "events", "child_process",
    "crypto", "http", "buffer", "url", "better-sqlite3", "knex"
  ]
  const result: Record<string, () => { find: RegExp, code: string }> = {}
  for (const item of externalModels) {
    result[item] = () => ({
      find: new RegExp(`^${item}$`),
      code: `const ${item} = require('${item}'); export { ${item} as default }`
    })
  }
  result['electron'] = () => {
    const electronModules = ["clipboard", "ipcRenderer", "nativeImage",
      "shell", "webFrame"
    ].join(",")
    return {
      find: new RegExp(`^electron$`),
      code: `const {${electronModules}} = require('electron'); export { ${electronModules} }`
    }
  }
  return result
}