// ===========================================
// 多班级版班级管理系统 - Go 后端
//
// 开发者: Canglan
// 联系方式: admin@sea-studio.top
// 版权归属: Sea Network Technology Studio
// 许可证: Apache License 2.0
//
// 版权所有 © Sea Network Technology Studio
// ===========================================

package handler

import (
	"github.com/gin-gonic/gin"

	"hz-gitea.sea-studio.top/canglan/SharedClassManager/internal/middleware"
	"hz-gitea.sea-studio.top/canglan/SharedClassManager/internal/schema"
	"hz-gitea.sea-studio.top/canglan/SharedClassManager/internal/service"
	"hz-gitea.sea-studio.top/canglan/SharedClassManager/pkg/response"
)

// ClassHandler 班级管理处理器
type ClassHandler struct {
	classService *service.ClassService
}

// NewClassHandler 创建班级管理处理器
func NewClassHandler(classService *service.ClassService) *ClassHandler {
	return &ClassHandler{classService: classService}
}

// ClassList 班级列表
func (h *ClassHandler) ClassList(c *gin.Context) {
	includeDisabled := c.Query("include_disabled") == "true"
	result, err := h.classService.ListClasses(includeDisabled)
	if err != nil {
		response.InternalError(c, "获取班级列表失败")
		return
	}
	response.Success(c, result, "操作成功")
}

// ClassDetail 班级详情
func (h *ClassHandler) ClassDetail(c *gin.Context) {
	classID, ok := parseID(c, "class_id")
	if !ok {
		return
	}

	result, err := h.classService.GetClassDetail(classID)
	if err != nil {
		response.NotFound(c, "班级不存在")
		return
	}
	response.Success(c, result, "操作成功")
}

// ClassCreate 创建班级
func (h *ClassHandler) ClassCreate(c *gin.Context) {
	var req schema.ClassCreateRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	result, err := h.classService.CreateClass(req.ClassName, req.Grade, req.Description)
	if err != nil {
		response.InternalError(c, err.Error())
		return
	}

	if success, _ := result["success"].(bool); !success {
		response.BadRequest(c, result["message"].(string))
		return
	}
	response.Success(c, result, "班级创建成功")
}

// ClassUpdate 更新班级
func (h *ClassHandler) ClassUpdate(c *gin.Context) {
	classID, ok := parseID(c, "class_id")
	if !ok {
		return
	}

	var req schema.ClassUpdateRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	if err := h.classService.UpdateClass(classID, req.ClassName, req.Grade, req.Description, req.Status); err != nil {
		response.InternalError(c, err.Error())
		return
	}
	response.SuccessWithMessage(c, "更新成功")
}

// ClassDelete 删除班级
func (h *ClassHandler) ClassDelete(c *gin.Context) {
	classID, ok := parseID(c, "class_id")
	if !ok {
		return
	}

	if err := h.classService.DeleteClass(classID); err != nil {
		response.InternalError(c, err.Error())
		return
	}
	response.SuccessWithMessage(c, "删除成功")
}

// SwitchClass 切换班级上下文
func (h *ClassHandler) SwitchClass(c *gin.Context) {
	var req schema.SwitchClassRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	userID := middleware.GetUserID(c)
	result, err := h.classService.SwitchClass(userID, req.ClassID)
	if err != nil {
		response.InternalError(c, err.Error())
		return
	}
	response.Success(c, result, "切换成功")
}

// GetSettings 获取班级设置
func (h *ClassHandler) GetSettings(c *gin.Context) {
	classID := middleware.GetClassID(c)
	result, err := h.classService.GetSettings(classID)
	if err != nil {
		response.InternalError(c, "获取设置失败")
		return
	}
	response.Success(c, result, "操作成功")
}

// allowedSettingKeys 允许通过 SaveSetting 端点写入的配置键白名单
var allowedSettingKeys = map[string]bool{
	"initial_password":                true,
	"initial_points":                  true,
	"deduction_attendance_absent":     true,
	"deduction_attendance_late":       true,
	"deduction_attendance_leave":      true,
	"deduction_homework_not_submit":   true,
	"deduction_homework_late":         true,
	"reset_frequency":                 true,
	"reset_day_of_week":               true,
	"reset_day_of_month":              true,
}

// SaveSetting 保存班级设置
func (h *ClassHandler) SaveSetting(c *gin.Context) {
	classID := middleware.GetClassID(c)

	var req schema.SettingRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	if !allowedSettingKeys[req.SettingKey] {
		response.BadRequest(c, "不允许的配置项: "+req.SettingKey)
		return
	}

	if err := h.classService.SaveSetting(classID, req.SettingKey, req.SettingValue); err != nil {
		response.InternalError(c, "保存设置失败")
		return
	}
	response.SuccessWithMessage(c, "保存成功")
}

// GetPointLimits 获取角色加减分配置
func (h *ClassHandler) GetPointLimits(c *gin.Context) {
	classID := middleware.GetClassID(c)
	result, err := h.classService.GetSettings(classID)
	if err != nil {
		response.InternalError(c, "获取配置失败")
		return
	}
	response.Success(c, result, "操作成功")
}

// allowedPointLimitKeys 允许的操行分限制配置键白名单（与 conduct_service 读取 key 一致）
var allowedPointLimitKeys = map[string]bool{
	"point_limit_班长_max":       true,
	"point_limit_班长_min":       true,
	"point_limit_学习委员_max":   true,
	"point_limit_学习委员_min":   true,
	"point_limit_考勤委员_max":   true,
	"point_limit_考勤委员_min":   true,
	"point_limit_劳动委员_max":   true,
	"point_limit_劳动委员_min":   true,
	"point_limit_志愿委员_max":   true,
	"point_limit_志愿委员_min":   true,
	"point_limit_科任老师_max":   true,
	"point_limit_科任老师_min":   true,
}

// SavePointLimits 保存角色加减分配置
func (h *ClassHandler) SavePointLimits(c *gin.Context) {
	classID := middleware.GetClassID(c)

	var req map[string]string
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	for key, value := range req {
		if !allowedPointLimitKeys[key] {
			response.BadRequest(c, "不允许的配置项: "+key)
			return
		}
		if err := h.classService.SaveSetting(classID, key, value); err != nil {
			response.InternalError(c, "保存配置失败")
			return
		}
	}
	response.SuccessWithMessage(c, "保存成功")
}

// GetFeatures 获取功能开关
func (h *ClassHandler) GetFeatures(c *gin.Context) {
	classID := middleware.GetClassID(c)
	result, err := h.classService.GetFeatures(classID)
	if err != nil {
		response.InternalError(c, "获取功能开关失败")
		return
	}
	response.Success(c, result, "操作成功")
}

// allowedFeatureKeys 允许的功能开关键白名单
var allowedFeatureKeys = map[string]bool{
	"parent_account_enabled":        true,
	"parent_password_change_enabled": true,
	"parent_view_attendance":        true,
	"parent_view_ranking":           true,
	"student_view_ranking":          true,
	"homework_management":           true,
	"attendance_management":         true,
	"cadre_homework":                true,
}

// SaveFeature 保存功能开关
func (h *ClassHandler) SaveFeature(c *gin.Context) {
	classID := middleware.GetClassID(c)

	var req schema.FeatureToggleRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	if !allowedFeatureKeys[req.FeatureKey] {
		response.BadRequest(c, "不允许的功能开关: "+req.FeatureKey)
		return
	}

	if err := h.classService.SaveFeature(classID, req.FeatureKey, req.Enabled); err != nil {
		response.InternalError(c, "保存功能开关失败")
		return
	}
	response.SuccessWithMessage(c, "保存成功")
}