// Package router 装配 gin 引擎与各模块路由。
// 路由分层：/api/ma（小程序，靠请求头 app_id 鉴权）、/api/admin（后台）。
package router

import (
	"time"

	"github.com/gin-gonic/gin"
	"gorm.io/gorm"

	adminhdl "portal-mini-go/internal/handler/admin"
	miniapphdl "portal-mini-go/internal/handler/admin/miniapp"
	userhdl "portal-mini-go/internal/handler/admin/user"
	app1hdl "portal-mini-go/internal/handler/miniapp/app1"
	"portal-mini-go/internal/middleware"
	"portal-mini-go/internal/pkg/config"
	"portal-mini-go/internal/pkg/response"
	"portal-mini-go/internal/pkg/session"
	"portal-mini-go/internal/pkg/wechat"
	miniapprepo "portal-mini-go/internal/repository/miniapp"
	"portal-mini-go/internal/repository/user"
	miniappsvc "portal-mini-go/internal/service/admin/miniapp"
	usersvc "portal-mini-go/internal/service/admin/user"
	app1svc "portal-mini-go/internal/service/miniapp/app1"
)

// New 构造并装配整个 HTTP 服务。
func New(cfg *config.Config, db *gorm.DB, store session.Store) *gin.Engine {
	if cfg.Server.Mode == "release" {
		gin.SetMode(gin.ReleaseMode)
	}

	r := gin.New()
	r.Use(middleware.Recovery(), middleware.Trace(), middleware.ErrorHandler())

	r.GET("/healthz", func(c *gin.Context) {
		response.OK(c, gin.H{"status": "ok"})
	})

	// 共享基础设施：微信客户端、用户仓储、小程序仓储。
	wx := wechat.NewClient()
	userRepo := user.New(db)
	miniRepo := miniapprepo.New(db)

	// 小程序分组：先校验请求头 app_id 身份，再挂载各小程序业务路由。
	ma := r.Group("/api/ma")
	ma.Use(middleware.MiniAppAuth(miniRepo))
	{
		app1Svc := app1svc.New(userRepo, miniRepo, wx, store)
		app1hdl.Register(ma, app1hdl.NewHandler(app1Svc), middleware.MiniUserAuth(store))
		// 新增小程序时，在此依次注册 app2..app10：
		// app2Svc := app2svc.New(userRepo, miniRepo, wx, store)
		// app2hdl.Register(ma, app2hdl.NewHandler(app2Svc))
	}

	// 后台管理分组：JWT 鉴权。
	ad := r.Group("/api/admin")
	ad.Use(middleware.AdminAuth(cfg.Admin.JWTSecret))
	{
		adminhdl.Register(ad, adminhdl.NewHandler(cfg.Admin.JWTSecret, parseTTL(cfg.Admin.TokenTTL)))

		// 小程序管理：被后台纳管的微信小程序配置（增删改查）。
		miniSvc := miniappsvc.New(miniRepo)
		miniapphdl.Register(ad, miniapphdl.NewHandler(miniSvc))

		// 用户管理：各小程序端用户（列表、详情、编辑、禁用/启用）。
		userSvc := usersvc.New(userRepo)
		userhdl.Register(ad, userhdl.NewHandler(userSvc))
	}

	return r
}

func parseTTL(s string) time.Duration {
	if d, err := time.ParseDuration(s); err == nil {
		return d
	}
	return 24 * time.Hour
}