package hr

import (
	"WiiCITMS/models/hr"
	"WiiGenerates/WiiCITMS/generates/v1/go/types"
	"WiiGoLibrary/apply/middle/process/v1"
	"WiiGoLibrary/framework/db/v1/utils/mssql/unique"
	"WiiGoLibrary/framework/hub/v1/dblib"
	"errors"
	"fmt"
)

// 权限管理请求参数
type CreatePermissionRequest struct {
	PermissionID   int    `json:"permissionId"`   // 权限ID
	PermissionName string `json:"permissionName"` // 权限名称
	PermissionCode string `json:"permissionCode"` // 权限代码
	Description    string `json:"description"`    // 权限描述
	Category       int    `json:"category"`       // 权限分类
}

type QueryPermissionRequest struct {
	PermissionName string `json:"permissionName"` // 权限名称，模糊查询
	PermissionCode string `json:"permissionCode"` // 权限代码，精确查询
	Category       int    `json:"category"`       // 权限分类
	Limit          int    `json:"limit"`          // 分页参数，每页数量
	Offset         int    `json:"offset"`         // 分页参数，偏移量
}

// CreatePermission 创建权限
func CreatePermission(params CreatePermissionRequest) (*hr.PermissionModel, *process.Process) {
	// 验证权限ID是否已存在
	var count int64
	r := dblib.DBIns.DB.Model(&hr.PermissionModel{}).Where("PermissionID = ? AND (RecordStatus & 524288) = 0", params.PermissionID).Count(&count)
	if r.Error != nil {
		return nil, process.FailError(types.QueryPermissionError, r.Error)
	}

	if count > 0 {
		return nil, process.FailError(types.DuplicatePermissionError, errors.New("权限ID已存在"))
	}

	// 验证权限代码是否已存在
	r = dblib.DBIns.DB.Model(&hr.PermissionModel{}).Where("PermissionCode = ? AND (RecordStatus & 524288) = 0", params.PermissionCode).Count(&count)
	if r.Error != nil {
		return nil, process.FailError(types.QueryPermissionError, r.Error)
	}

	if count > 0 {
		return nil, process.FailError(types.DuplicatePermissionError, errors.New("权限代码已存在"))
	}

	// 创建权限
	permission := hr.PermissionInstance()
	permission.PermissionID = params.PermissionID
	permission.PermissionName = params.PermissionName
	permission.PermissionCode = params.PermissionCode
	permission.Description = params.Description
	permission.Category = int16(params.Category)

	// 保存到数据库
	r = dblib.DBIns.DB.Create(permission)
	if r.Error != nil {
		return nil, process.FailError(types.CreatePermissionError, r.Error)
	}

	return permission, process.Success(200)
}

// UpdatePermission 更新权限信息
func UpdatePermission(permissionGuid string, params CreatePermissionRequest) (*hr.PermissionModel, *process.Process) {
	// 获取权限
	permission, proc := GetPermissionByID(permissionGuid)
	if proc.IsError() {
		return nil, proc
	}

	// 如果修改了权限ID，验证是否已存在
	if params.PermissionID > 0 && params.PermissionID != permission.PermissionID {
		var count int64
		r := dblib.DBIns.DB.Model(&hr.PermissionModel{}).Where("PermissionID = ? AND RecordGuid != ? AND (RecordStatus & 524288) = 0", params.PermissionID, permission.RecordGuid).Count(&count)
		if r.Error != nil {
			return nil, process.FailError(types.QueryPermissionError, r.Error)
		}

		if count > 0 {
			return nil, process.FailError(types.DuplicatePermissionError, errors.New("权限ID已存在"))
		}

		permission.PermissionID = params.PermissionID
	}

	// 如果修改了权限代码，验证是否已存在
	if params.PermissionCode != "" && params.PermissionCode != permission.PermissionCode {
		var count int64
		r := dblib.DBIns.DB.Model(&hr.PermissionModel{}).Where("PermissionCode = ? AND RecordGuid != ? AND (RecordStatus & 524288) = 0", params.PermissionCode, permission.RecordGuid).Count(&count)
		if r.Error != nil {
			return nil, process.FailError(types.QueryPermissionError, r.Error)
		}

		if count > 0 {
			return nil, process.FailError(types.DuplicatePermissionError, errors.New("权限代码已存在"))
		}

		permission.PermissionCode = params.PermissionCode
	}

	// 更新其他字段
	if params.PermissionName != "" {
		permission.PermissionName = params.PermissionName
	}

	if params.Description != "" {
		permission.Description = params.Description
	}

	if params.Category > 0 {
		permission.Category = int16(params.Category)
	}

	// 保存更新
	r := dblib.DBIns.DB.Save(permission)
	if r.Error != nil {
		return nil, process.FailError(types.UpdatePermissionError, r.Error)
	}

	return permission, process.Success(200)
}

// GetPermissionByID 根据ID获取权限
func GetPermissionByID(permissionGuid string) (*hr.PermissionModel, *process.Process) {
	// 验证权限ID
	guid, err := unique.FromString(permissionGuid)
	if err != nil {
		return nil, process.FailError(types.InvalidParamError, err)
	}

	// 查询权限
	permission := &hr.PermissionModel{}
	r := dblib.DBIns.DB.Where("RecordGuid = ? AND (RecordStatus & 524288) = 0", guid).First(permission)
	if r.Error != nil {
		return nil, process.FailError(types.PermissionNotFoundError, r.Error)
	}

	return permission, process.Success(200)
}

// GetPermissionByCode 根据代码获取权限
func GetPermissionByCode(permissionCode string) (*hr.PermissionModel, *process.Process) {
	// 查询权限
	permission := &hr.PermissionModel{}
	r := dblib.DBIns.DB.Where("PermissionCode = ? AND (RecordStatus & 524288) = 0", permissionCode).First(permission)
	if r.Error != nil {
		return nil, process.FailError(types.PermissionNotFoundError, r.Error)
	}

	return permission, process.Success(200)
}

// QueryPermissions 查询权限列表
func QueryPermissions(params QueryPermissionRequest) ([]*hr.PermissionModel, *process.Process) {
	result := make([]*hr.PermissionModel, 0)

	// 构建查询条件
	db := dblib.DBIns.DB.Model(&hr.PermissionModel{}).Where("(RecordStatus & 524288) = 0")

	// 按权限名称模糊查询
	if params.PermissionName != "" {
		db = db.Where("PermissionName LIKE ?", "%"+params.PermissionName+"%")
	}

	// 按权限代码精确查询
	if params.PermissionCode != "" {
		db = db.Where("PermissionCode = ?", params.PermissionCode)
	}

	// 按权限分类筛选
	if params.Category > 0 {
		db = db.Where("Category = ?", params.Category)
	}

	// 分页查询
	limit := params.Limit
	if limit <= 0 {
		limit = 20 // 默认每页20条
	}
	offset := params.Offset
	if offset < 0 {
		offset = 0
	}

	// 执行查询
	r := db.Limit(limit).Offset(offset).Find(&result)
	if r.Error != nil {
		return result, process.FailError(types.QueryPermissionError, r.Error)
	}

	return result, process.Success(200)
}

// DeletePermission 删除权限（逻辑删除）
func DeletePermission(permissionGuid string) *process.Process {
	// 获取权限
	permission, proc := GetPermissionByID(permissionGuid)
	if proc.IsError() {
		return proc
	}

	// 检查是否有岗位关联该权限
	var relationCount int64
	r := dblib.DBIns.DB.Model(&hr.PositionPermissionModel{}).Where("PermissionGuid = ? AND (RecordStatus & 524288) = 0", permission.RecordGuid).Count(&relationCount)
	if r.Error != nil {
		return process.FailError(types.QueryPermissionError, r.Error)
	}

	if relationCount > 0 {
		return process.FailError(types.DeletePermissionError, errors.New("该权限已被岗位引用，不能删除"))
	}

	// 使用原生SQL执行删除操作（设置删除标记）
	sql := "UPDATE " + hr.PermissionTable + " SET RecordStatus = RecordStatus | 524288 WHERE RecordGuid = ?"
	r = dblib.DBIns.DB.Exec(sql, permission.RecordGuid)
	if r.Error != nil {
		return process.FailError(types.DeletePermissionError, r.Error)
	}

	return process.Success(200)
}

// InitSystemPermissions 初始化系统权限
func InitSystemPermissions() *process.Process {
	// 系统预定义权限列表
	permissionList := []struct {
		ID       int
		Name     string
		Code     string
		Desc     string
		Category int
	}{
		{hr.PermOrganizationView, "组织查看", "org:view", "允许查看组织信息", 1},
		{hr.PermOrganizationCreate, "组织创建", "org:create", "允许创建新组织", 1},
		{hr.PermOrganizationUpdate, "组织更新", "org:update", "允许更新组织信息", 1},
		{hr.PermOrganizationDelete, "组织删除", "org:delete", "允许删除组织", 1},

		{hr.PermPositionView, "岗位查看", "position:view", "允许查看岗位信息", 2},
		{hr.PermPositionCreate, "岗位创建", "position:create", "允许创建新岗位", 2},
		{hr.PermPositionUpdate, "岗位更新", "position:update", "允许更新岗位信息", 2},
		{hr.PermPositionDelete, "岗位删除", "position:delete", "允许删除岗位", 2},

		{hr.PermStaffView, "人员查看", "staff:view", "允许查看人员信息", 3},
		{hr.PermStaffCreate, "人员创建", "staff:create", "允许创建新人员", 3},
		{hr.PermStaffUpdate, "人员更新", "staff:update", "允许更新人员信息", 3},
		{hr.PermStaffDelete, "人员删除", "staff:delete", "允许删除人员", 3},

		{hr.PermLeaveApprove, "请假审批", "leave:approve", "允许审批请假申请", 4},
		{hr.PermLeaveView, "请假查看", "leave:view", "允许查看请假记录", 4},

		{hr.PermWorkflowAdmin, "工作流管理", "workflow:admin", "允许管理工作流程", 5},

		{hr.PermSystemAdmin, "系统管理", "system:admin", "系统管理员权限", 9},
	}

	for _, perm := range permissionList {
		// 检查权限是否已存在
		var count int64
		r := dblib.DBIns.DB.Model(&hr.PermissionModel{}).Where("PermissionID = ? OR PermissionCode = ?", perm.ID, perm.Code).Count(&count)
		if r.Error != nil {
			return process.FailError(types.QueryPermissionError, r.Error)
		}

		// 如果不存在，则创建
		if count == 0 {
			permission := hr.PermissionInstance()
			permission.PermissionID = perm.ID
			permission.PermissionName = perm.Name
			permission.PermissionCode = perm.Code
			permission.Description = perm.Desc
			permission.Category = int16(perm.Category)

			r = dblib.DBIns.DB.Create(permission)
			if r.Error != nil {
				return process.FailError(types.CreatePermissionError, fmt.Errorf("创建权限[%s]失败: %w", perm.Code, r.Error))
			}
		}
	}

	return process.Success(200)
}