package controllers

import (
	"fmt"
	"strings"

	"server/models"
	"server/pkg/jwtutil"
	"server/services"

	beego "github.com/beego/beego/v2/server/web"
)

// BackendModulesController backend 模块接口（yz_system_modules）
type BackendModulesController struct {
	beego.Controller
}

func (c *BackendModulesController) backendModulesClaims() (*jwtutil.Claims, error) {
	auth := c.Ctx.Request.Header.Get("Authorization")
	if auth == "" {
		return nil, fmt.Errorf("未登录")
	}
	parts := strings.SplitN(auth, " ", 2)
	if len(parts) != 2 || parts[0] != "Bearer" {
		return nil, fmt.Errorf("认证信息格式错误")
	}
	claims, err := jwtutil.ParseToken(parts[1])
	if err != nil {
		return nil, fmt.Errorf("无效的token")
	}
	if claims.UserType != "backend" {
		return nil, fmt.Errorf("无权访问")
	}
	return claims, nil
}

func (c *BackendModulesController) jsonErr(httpStatus, bizCode int, msg string) {
	c.Ctx.Output.SetStatus(httpStatus)
	c.Data["json"] = map[string]interface{}{"code": bizCode, "msg": msg}
	_ = c.ServeJSON()
}

// moduleWithEnabled 带套餐开通标记的模块输出
type moduleWithEnabled struct {
	models.SystemModules
	Enabled bool `json:"enabled"`
}

// GetTenantList GET /backend/modules/getTenantList
// 返回当前 backend 账号可见的模块（status=1 且 is_show=1），并根据租户绑定的套餐标记每个模块是否已开通。
// 前端可据此排序（已开通在前）、置灰未开通卡片、阻止跳转。
func (c *BackendModulesController) GetTenantList() {
	claims, err := c.backendModulesClaims()
	if err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}

	var rows []models.SystemModules
	_, err = models.Orm.QueryTable(new(models.SystemModules)).
		Filter("delete_time__isnull", true).
		Filter("status", 1).
		Filter("is_show", 1).
		OrderBy("sort", "id").
		All(&rows)
	if err != nil {
		c.jsonErr(500, 500, "获取失败："+err.Error())
		return
	}

	// 查询当前租户套餐包含的模块 code 集合（含默认套餐回退）
	tid := uint64(claims.TenantId)
	allowedCodes := services.GetTenantModuleCodes(tid)

	enhanced := make([]moduleWithEnabled, 0, len(rows))
	for _, m := range rows {
		enabled := true
		if len(allowedCodes) > 0 {
			enabled = allowedCodes[m.Code]
		}
		enhanced = append(enhanced, moduleWithEnabled{SystemModules: m, Enabled: enabled})
	}

	c.Data["json"] = map[string]interface{}{
		"code": 200,
		"msg":  "获取成功",
		"data": map[string]interface{}{
			"list":  enhanced,
			"total": len(enhanced),
		},
	}
	_ = c.ServeJSON()
}