package system

import (
	"strconv"
	"strings"

	"git.echol.cn/loser/Go-Web-Template/server/global"
	"git.echol.cn/loser/Go-Web-Template/server/model/common/response"
	"git.echol.cn/loser/Go-Web-Template/server/model/system"
	systemReq "git.echol.cn/loser/Go-Web-Template/server/model/system/request"
	"git.echol.cn/loser/Go-Web-Template/server/utils"
	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

type SysParamsApi struct{}

// CreateSysParams 创建参数
// @Tags SysParams
// @Summary 创建参数
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Param data body system.SysParams true "创建参数"
// @Success 200 {object} response.Response{msg=string} "创建成功"
// @Router /sysParams/createSysParams [post]
func (sysParamsApi *SysParamsApi) CreateSysParams(c *gin.Context) {
	var sysParams system.SysParams
	err := c.ShouldBindJSON(&sysParams)
	if err != nil {
		response.FailWithMessage(err.Error(), c)
		return
	}
	err = sysParamsService.CreateSysParams(&sysParams)
	if err != nil {
		global.GVA_LOG.Error("创建失败!", zap.Error(err))
		response.FailWithMessage("创建失败:"+err.Error(), c)
		return
	}
	// write audit (best-effort)
	operatorID := utils.GetUserID(c)
	if operatorID > 0 {
		_ = global.GVA_DB.Create(&system.SysParamChangeLog{
			ParamID:        sysParams.ID,
			Key:            sysParams.Key,
			Action:         system.SysParamChangeActionCreate,
			OldValue:       "",
			NewValue:       sysParams.Value,
			OperatorUserID: operatorID,
		}).Error
	}
	response.OkWithMessage("创建成功", c)
}

// DeleteSysParams 删除参数
// @Tags SysParams
// @Summary 删除参数
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Param data body system.SysParams true "删除参数"
// @Success 200 {object} response.Response{msg=string} "删除成功"
// @Router /sysParams/deleteSysParams [delete]
func (sysParamsApi *SysParamsApi) DeleteSysParams(c *gin.Context) {
	ID := c.Query("ID")
	// read before delete for audit
	var before system.SysParams
	_ = global.GVA_DB.Where("id = ?", ID).First(&before).Error
	err := sysParamsService.DeleteSysParams(ID)
	if err != nil {
		global.GVA_LOG.Error("删除失败!", zap.Error(err))
		response.FailWithMessage("删除失败:"+err.Error(), c)
		return
	}
	operatorID := utils.GetUserID(c)
	if operatorID > 0 && before.ID > 0 {
		_ = global.GVA_DB.Create(&system.SysParamChangeLog{
			ParamID:        before.ID,
			Key:            before.Key,
			Action:         system.SysParamChangeActionDelete,
			OldValue:       before.Value,
			NewValue:       "",
			OperatorUserID: operatorID,
		}).Error
	}
	response.OkWithMessage("删除成功", c)
}

// DeleteSysParamsByIds 批量删除参数
// @Tags SysParams
// @Summary 批量删除参数
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Success 200 {object} response.Response{msg=string} "批量删除成功"
// @Router /sysParams/deleteSysParamsByIds [delete]
func (sysParamsApi *SysParamsApi) DeleteSysParamsByIds(c *gin.Context) {
	IDs := c.QueryArray("IDs[]")
	err := sysParamsService.DeleteSysParamsByIds(IDs)
	if err != nil {
		global.GVA_LOG.Error("批量删除失败!", zap.Error(err))
		response.FailWithMessage("批量删除失败:"+err.Error(), c)
		return
	}
	response.OkWithMessage("批量删除成功", c)
}

// UpdateSysParams 更新参数
// @Tags SysParams
// @Summary 更新参数
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Param data body system.SysParams true "更新参数"
// @Success 200 {object} response.Response{msg=string} "更新成功"
// @Router /sysParams/updateSysParams [put]
func (sysParamsApi *SysParamsApi) UpdateSysParams(c *gin.Context) {
	var sysParams system.SysParams
	err := c.ShouldBindJSON(&sysParams)
	if err != nil {
		response.FailWithMessage(err.Error(), c)
		return
	}
	// read before update for audit
	var before system.SysParams
	_ = global.GVA_DB.Where("id = ?", sysParams.ID).First(&before).Error
	err = sysParamsService.UpdateSysParams(sysParams)
	if err != nil {
		global.GVA_LOG.Error("更新失败!", zap.Error(err))
		response.FailWithMessage("更新失败:"+err.Error(), c)
		return
	}
	operatorID := utils.GetUserID(c)
	if operatorID > 0 && before.ID > 0 {
		_ = global.GVA_DB.Create(&system.SysParamChangeLog{
			ParamID:        before.ID,
			Key:            before.Key,
			Action:         system.SysParamChangeActionUpdate,
			OldValue:       before.Value,
			NewValue:       sysParams.Value,
			OperatorUserID: operatorID,
		}).Error
	}
	response.OkWithMessage("更新成功", c)
}

// GetSysParamChangeLogList 分页获取参数变更审计
// @Tags SysParams
// @Summary 分页获取参数变更审计
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Param page query int false "页码" default(1)
// @Param pageSize query int false "每页大小" default(10)
// @Param key query string false "key（模糊）"
// @Param operatorUserId query int false "操作人ID"
// @Success 200 {object} response.Response{data=response.PageResult,msg=string} "获取成功"
// @Router /sysParams/getChangeLogList [get]
func (sysParamsApi *SysParamsApi) GetSysParamChangeLogList(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("pageSize", "10"))
	if page <= 0 {
		page = 1
	}
	if pageSize <= 0 || pageSize > 200 {
		pageSize = 10
	}

	key := strings.TrimSpace(c.Query("key"))
	var operatorID uint
	if raw := strings.TrimSpace(c.Query("operatorUserId")); raw != "" {
		if v, err := strconv.Atoi(raw); err == nil && v > 0 {
			operatorID = uint(v)
		}
	}

	db := global.GVA_DB.Model(&system.SysParamChangeLog{})
	if key != "" {
		db = db.Where("key LIKE ?", "%"+key+"%")
	}
	if operatorID > 0 {
		db = db.Where("operator_user_id = ?", operatorID)
	}

	var total int64
	if err := db.Count(&total).Error; err != nil {
		response.FailWithMessage("获取失败:"+err.Error(), c)
		return
	}

	type row struct {
		system.SysParamChangeLog
		OperatorName string `json:"operatorName" gorm:"column:operator_name"`
	}
	var list []row
	if err := db.
		Joins("LEFT JOIN sys_users su ON su.id = sys_param_change_logs.operator_user_id").
		Select("sys_param_change_logs.*, su.username AS operator_name").
		Order("sys_param_change_logs.id desc").
		Limit(pageSize).
		Offset((page - 1) * pageSize).
		Scan(&list).Error; err != nil {
		response.FailWithMessage("获取失败:"+err.Error(), c)
		return
	}

	response.OkWithDetailed(response.PageResult{
		List:     list,
		Total:    total,
		Page:     page,
		PageSize: pageSize,
	}, "获取成功", c)
}

// FindSysParams 用id查询参数
// @Tags SysParams
// @Summary 用id查询参数
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Param data query system.SysParams true "用id查询参数"
// @Success 200 {object} response.Response{data=system.SysParams,msg=string} "查询成功"
// @Router /sysParams/findSysParams [get]
func (sysParamsApi *SysParamsApi) FindSysParams(c *gin.Context) {
	ID := c.Query("ID")
	resysParams, err := sysParamsService.GetSysParams(ID)
	if err != nil {
		global.GVA_LOG.Error("查询失败!", zap.Error(err))
		response.FailWithMessage("查询失败:"+err.Error(), c)
		return
	}
	response.OkWithData(resysParams, c)
}

// GetSysParamsList 分页获取参数列表
// @Tags SysParams
// @Summary 分页获取参数列表
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Param data query systemReq.SysParamsSearch true "分页获取参数列表"
// @Success 200 {object} response.Response{data=response.PageResult,msg=string} "获取成功"
// @Router /sysParams/getSysParamsList [get]
func (sysParamsApi *SysParamsApi) GetSysParamsList(c *gin.Context) {
	var pageInfo systemReq.SysParamsSearch
	err := c.ShouldBindQuery(&pageInfo)
	if err != nil {
		response.FailWithMessage(err.Error(), c)
		return
	}
	list, total, err := sysParamsService.GetSysParamsInfoList(pageInfo)
	if err != nil {
		global.GVA_LOG.Error("获取失败!", zap.Error(err))
		response.FailWithMessage("获取失败:"+err.Error(), c)
		return
	}
	response.OkWithDetailed(response.PageResult{
		List:     list,
		Total:    total,
		Page:     pageInfo.Page,
		PageSize: pageInfo.PageSize,
	}, "获取成功", c)
}

// GetSysParam 根据key获取参数value
// @Tags SysParams
// @Summary 根据key获取参数value
// @Security ApiKeyAuth
// @accept application/json
// @Produce application/json
// @Param key query string true "key"
// @Success 200 {object} response.Response{data=system.SysParams,msg=string} "获取成功"
// @Router /sysParams/getSysParam [get]
func (sysParamsApi *SysParamsApi) GetSysParam(c *gin.Context) {
	k := c.Query("key")
	params, err := sysParamsService.GetSysParam(k)
	if err != nil {
		global.GVA_LOG.Error("获取失败!", zap.Error(err))
		response.FailWithMessage("获取失败:"+err.Error(), c)
		return
	}
	response.OkWithDetailed(params, "获取成功", c)
}