// ===========================================
// 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"
)

// SemesterHandler 学期管理处理器
type SemesterHandler struct {
	semesterService *service.SemesterService
}

// NewSemesterHandler 创建学期管理处理器
func NewSemesterHandler(semesterService *service.SemesterService) *SemesterHandler {
	return &SemesterHandler{semesterService: semesterService}
}

// SemesterList 学期列表
func (h *SemesterHandler) SemesterList(c *gin.Context) {
	result, err := h.semesterService.ListSemesters()
	if err != nil {
		response.InternalError(c, "获取学期列表失败")
		return
	}
	response.Success(c, result, "操作成功")
}

// ActiveSemester 当前学期
func (h *SemesterHandler) ActiveSemester(c *gin.Context) {
	semester, err := h.semesterService.GetActiveSemester()
	if err != nil {
		response.Success(c, nil, "无活跃学期")
		return
	}
	response.Success(c, semester, "操作成功")
}

// SemesterCreate 创建学期
func (h *SemesterHandler) SemesterCreate(c *gin.Context) {
	var req schema.SemesterCreateRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	result, err := h.semesterService.CreateSemester(req.SemesterName, req.StartDate, req.EndDate)
	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, "操作成功")
}

// ActivateSemester 激活学期
func (h *SemesterHandler) ActivateSemester(c *gin.Context) {
	semesterID, ok := parseID(c, "semester_id")
	if !ok {
		return
	}

	if err := h.semesterService.ActivateSemester(semesterID); err != nil {
		response.BadRequest(c, err.Error())
		return
	}
	response.SuccessWithMessage(c, "已设为当前学期")
}

// SemesterUpdate 编辑学期
func (h *SemesterHandler) SemesterUpdate(c *gin.Context) {
	semesterID, ok := parseID(c, "semester_id")
	if !ok {
		return
	}

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

	if err := h.semesterService.UpdateSemester(semesterID, req.SemesterName, req.StartDate, req.EndDate); err != nil {
		response.BadRequest(c, err.Error())
		return
	}
	response.SuccessWithMessage(c, "更新成功")
}

// SemesterDelete 删除学期
func (h *SemesterHandler) SemesterDelete(c *gin.Context) {
	semesterID, ok := parseID(c, "semester_id")
	if !ok {
		return
	}

	if err := h.semesterService.DeleteSemester(semesterID); err != nil {
		response.BadRequest(c, err.Error())
		return
	}
	response.SuccessWithMessage(c, "删除成功")
}

// AssociateRecords 关联记录
func (h *SemesterHandler) AssociateRecords(c *gin.Context) {
	semesterID, ok := parseID(c, "semester_id")
	if !ok {
		return
	}

	result, err := h.semesterService.AssociateRecords(semesterID)
	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, "操作成功")
}

// ArchiveSemester 归档学期
func (h *SemesterHandler) ArchiveSemester(c *gin.Context) {
	semesterID, ok := parseID(c, "semester_id")
	if !ok {
		return
	}

	classID := parseQueryParamInt(c, "class_id", 0)
	resetScores := c.Query("reset_scores") == "true"

	result, err := h.semesterService.ArchiveSemester(semesterID, classID, resetScores)
	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, "操作成功")
}

// GetArchiveData 归档数据
func (h *SemesterHandler) GetArchiveData(c *gin.Context) {
	semesterID, ok := parseID(c, "semester_id")
	if !ok {
		return
	}

	classID := parseQueryParamInt(c, "class_id", 0)
	page := parseQueryParamInt(c, "page", 1)
	pageSize := parseQueryParamInt(c, "page_size", 20)

	result, err := h.semesterService.GetArchiveRecords(semesterID, classID, page, pageSize)
	if err != nil {
		response.InternalError(c, err.Error())
		return
	}
	response.Success(c, result, "操作成功")
}

// PeriodReset 手动触发周/月重置
func (h *SemesterHandler) PeriodReset(c *gin.Context) {
	var req schema.PeriodResetRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	classID := middleware.GetClassID(c)
	if classID == 0 {
		response.BadRequest(c, "未指定班级")
		return
	}

	userID := middleware.GetUserID(c)
	realName := middleware.GetRealName(c)
	ip := c.ClientIP()

	if err := h.semesterService.PeriodReset(classID, req.Period, userID, realName, ip); err != nil {
		response.InternalError(c, err.Error())
		return
	}
	response.SuccessWithMessage(c, service.PeriodLabelCN(req.Period)+"重置成功")
}

// GetPeriodArchives 查看周期归档数据
func (h *SemesterHandler) GetPeriodArchives(c *gin.Context) {
	var req schema.PeriodArchiveQuery
	if err := c.ShouldBindQuery(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	classID := middleware.GetClassID(c)
	if classID == 0 {
		response.BadRequest(c, "未指定班级")
		return
	}

	result, err := h.semesterService.GetPeriodArchives(classID, req.Period, req.Page, req.PageSize)
	if err != nil {
		response.InternalError(c, err.Error())
		return
	}
	response.Success(c, result, "操作成功")
}