package main

import (
	"bufio"
	"context"
	"crypto/subtle"
	"embed"
	"flag"
	"fmt"
	"io/fs"
	"net/http"
	"os"
	"os/exec"
	"runtime"
	"strings"
	"time"

	"bj_power_mes/common/httpx"
	xlog "bj_power_mes/common/logx"
	"bj_power_mes/internal/config"
	"bj_power_mes/internal/db"
	"bj_power_mes/internal/handler"
	"bj_power_mes/internal/logic"
	"bj_power_mes/internal/svc"

	"github.com/zeromicro/go-zero/core/conf"
	"github.com/zeromicro/go-zero/core/logx"
	"github.com/zeromicro/go-zero/rest"
)

var configFile = flag.String("f", "etc/bj_power_mes-api.yaml", "the config file")

//go:embed public
var public embed.FS

// openBrowser 调用系统默认浏览器打开 url
func openBrowser(url string) {
	var cmd *exec.Cmd
	switch runtime.GOOS {
	case "windows":
		cmd = exec.Command("rundll32", "url.dll,FileProtocolHandler", url)
	case "darwin":
		cmd = exec.Command("open", url)
	default:
		cmd = exec.Command("xdg-open", url)
	}
	_ = cmd.Start()
}

// promptPassword 从终端读取一行输入（不隐藏回显，用于运维终端操作）
func promptPassword(msg string) string {
	fmt.Print(msg)
	line, _ := bufio.NewReader(os.Stdin).ReadString('\n')
	return strings.TrimRight(line, "\r\n")
}

// adminGate 管理员密码门禁：敏感命令行操作必须输入与配置一致的密码才放行；
// 校验失败会记录日志并终止，绝不继续执行。
func adminGate(c config.Config) bool {
	pwd := promptPassword("请输入管理员密码以执行 [" + flag.Arg(0) + "]: ")
	if subtle.ConstantTimeCompare([]byte(pwd), []byte(c.Cli.AdminPassword)) != 1 {
		logx.Errorf("敏感命令 [%s] 因管理员密码校验失败被终止", flag.Arg(0))
		fmt.Println("管理员密码不正确，已终止该操作。")
		return false
	}
	logx.Infof("敏感命令 [%s] 已通过管理员密码校验", flag.Arg(0))
	return true
}

func main() {
	flag.Parse()

	var c config.Config
	conf.MustLoad(*configFile, &c)

	// 日志按天存储：logs/bj_power_mes-2026-01-02.log，保留 30 天
	logger := xlog.NewLogger(c.Logger)
	xlog.SetDefault(logger)
	logx.SetWriter(logger)
	logx.DisableStat()
	defer func() { _ = logger.Close() }()

	// 命令行子命令：DDL/数据操作一律显式触发 + 管理员密码门禁，不随服务启动自动改库
	cmd := flag.Arg(0)
	switch cmd {
	case "migrate":
		if !adminGate(c) {
			os.Exit(1)
		}
		if err := db.EnsureDB(c.Database); err != nil {
			logx.Errorf("ensure database failed: %v", err)
			os.Exit(1)
		}
		if err := db.AutoMigrate(c.Database); err != nil {
			logx.Errorf("migrate failed: %v", err)
			os.Exit(1)
		}
		logx.Info("migrate 完成：数据库结构迁移成功（只增/补列，未删除任何数据）。")
		fmt.Println("migrate: 数据库结构迁移成功（只增/补列，未删除任何数据）。")
		return
	case "reset-all":
		fmt.Println("reset-all: 即将清空并重建全部表，此操作不可恢复！")
		if !adminGate(c) {
			os.Exit(1)
		}
		if err := db.EnsureDB(c.Database); err != nil {
			logx.Errorf("ensure database failed: %v", err)
			os.Exit(1)
		}
		if err := db.DropAllTables(c.Database); err != nil {
			logx.Errorf("reset-all drop failed: %v", err)
			os.Exit(1)
		}
		entClient, _ := db.MustNewDB(c.Database)
		defer entClient.Close()
		if err := entClient.Schema.Create(context.Background()); err != nil {
			logx.Errorf("reset-all create failed: %v", err)
			os.Exit(1)
		}
		if err := logic.New(&svc.ServiceContext{EntClient: entClient}).Seed(context.Background()); err != nil {
			logx.Errorf("reset-all seed failed: %v", err)
			os.Exit(1)
		}
		logx.Info("reset-all 完成：已清空并重建全部表，并写入基础数据。")
		fmt.Println("reset-all: 已清空并重建全部表，并写入基础数据。")
		return
	case "seed":
		if !adminGate(c) {
			os.Exit(1)
		}
		if err := db.EnsureDB(c.Database); err != nil {
			logx.Errorf("ensure database failed: %v", err)
			os.Exit(1)
		}
		entClient, sqlDB := db.MustNewDB(c.Database)
		defer entClient.Close()
		defer sqlDB.Close()
		if err := entClient.Schema.Create(context.Background()); err != nil {
			logx.Errorf("seed ensure schema failed: %v", err)
			os.Exit(1)
		}
		if err := logic.New(&svc.ServiceContext{EntClient: entClient}).Seed(context.Background()); err != nil {
			logx.Errorf("seed failed: %v", err)
			os.Exit(1)
		}
		logx.Info("seed 完成：基础数据已对齐。")
		fmt.Println("seed: 基础数据已对齐。")
		return
	case "", "serve":
		// 正常启动服务
	default:
		fmt.Println("未知命令: " + cmd + "；可用命令: migrate / reset-all / seed / serve")
		os.Exit(1)
	}

	svcCtx := svc.NewServiceContext(c)

	// 启动时对齐基础数据（角色、admin 账号、菜单、工序模板、工位派工）；本次不再自动建表
	if err := logic.New(svcCtx).Seed(context.Background()); err != nil {
		logx.Errorf("Seed failed: %v", err)
	}

	// 内嵌前端（public/）SPA
	sub, _ := fs.Sub(public, "public")
	spaHandler := httpx.NewNotFoundHandler(http.FS(sub))

	server := rest.MustNewServer(
		c.RestConf,
		rest.WithCors("*"),
		rest.WithNotFoundHandler(http.HandlerFunc(spaHandler.ServeHTTP)),
	)
	defer server.Stop()

	// 鉴权/系统管理 + 生产业务 + 内部 API/看板
	handler.RegisterRoutes(server, svcCtx)
	handler.RegisterProductionRoutes(server, svcCtx)

	fmt.Printf("Starting bj_power_mes server at %s:%d...\n", c.Host, c.Port)
	logx.Infof("Starting bj_power_mes server at %s:%d...", c.Host, c.Port)

	// 服务起来后自动打开浏览器访问前端
	host := c.Host
	if host == "0.0.0.0" || host == "" {
		host = "127.0.0.1"
	}
	go func() {
		time.Sleep(time.Second)
		openBrowser(fmt.Sprintf("http://%s:%d", host, c.Port))
	}()

	server.Start()
}