package role

import (
	"SciencesServer/app/api/admin/controller"
	"SciencesServer/app/api/admin/model"
	model2 "SciencesServer/app/common/model"
	"SciencesServer/app/service"
	"SciencesServer/app/session"
	"SciencesServer/serve/logger"
	"SciencesServer/utils"
	"errors"
	"fmt"
	"time"
)

type Instance struct{ *session.Admin }

type InstanceHandle func(session *session.Admin) *Instance

type (
	// InstanceInfo 角色信息
	InstanceInfo struct {
		ID string `json:"id"`
		*model2.SysRole
	}
	// InstanceBasicInfo 角色基本信息
	InstanceBasicInfo struct {
		ID   uint64 `json:"id"`
		Name string `json:"name"`
	}
)

// Index 列表信息
func (c *Instance) Index(name string, page, pageSize int) (*controller.ReturnPages, error) {
	mSysRole := model.NewSysRole()

	where := []*model2.ModelWhereOrder{
		&model2.ModelWhereOrder{
			Where: model2.NewWhere("tenant_id", c.TenantID),
			Order: model2.NewOrder("sort", model2.OrderModeToAsc),
		},
		&model2.ModelWhereOrder{
			Order: model2.NewOrder("id", model2.OrderModeToDesc),
		},
	}
	if name != "" {
		where = append(where, &model2.ModelWhereOrder{
			Where: model2.NewWhereLike("name", name),
		})
	}
	var count int64

	out := make([]*model2.SysRole, 0)

	if err := model2.Pages(mSysRole.SysRole, &out, page, pageSize, &count, where...); err != nil {
		return nil, err
	}
	list := make([]*InstanceInfo, 0)

	for _, v := range out {
		list = append(list, &InstanceInfo{ID: v.GetEncodeID(), SysRole: v})
	}
	return &controller.ReturnPages{Data: list, Count: count}, nil

}

// Select 筛选信息
func (c *Instance) Select() ([]*InstanceBasicInfo, error) {
	mSysRole := model.NewSysRole()

	where := []*model2.ModelWhereOrder{
		&model2.ModelWhereOrder{
			Where: model2.NewWhere("tenant_id", c.TenantID),
			Order: model2.NewOrder("sort", model2.OrderModeToAsc),
		},
		&model2.ModelWhereOrder{
			Order: model2.NewOrder("id", model2.OrderModeToDesc),
		},
	}
	out := make([]*InstanceBasicInfo, 0)

	if err := model2.Scan(mSysRole.SysRole, &out, where...); err != nil {
		return nil, err
	}
	return out, nil
}

// Form 数据操作
func (c *Instance) Form(id uint64, name, remark string, sort int) error {
	mSysRole := model.NewSysRole()

	if id <= 0 {
		mSysRole.TenantID = c.TenantID
		mSysRole.Name = name
		mSysRole.Remark = remark
		mSysRole.Sort = sort
		mSysRole.Status = model2.SysRoleStatusForNormal

		if err := model2.Create(mSysRole.SysRole); err != nil {
			return err
		}
		return nil
	}
	mSysRole.ID = id

	if err := model2.Updates(mSysRole.SysRole, map[string]interface{}{
		"name": name, "remark": remark, "sort": sort,
	}); err != nil {
		return err
	}
	return nil
}

// Status 状态操作
func (c *Instance) Status(id uint64, status int) error {
	mSysRole := model.NewSysRole()
	mSysRole.ID = id

	isExist, err := model2.FirstWhere(mSysRole.SysRole)

	if err != nil {
		return err
	} else if !isExist {
		return errors.New("角色不存在")
	}
	if c.TenantID > 0 && c.TenantID != mSysRole.TenantID {
		return errors.New("不可操作其他租户角色")
	}
	if err = model2.Updates(mSysRole.SysRole, map[string]interface{}{
		"status": status, "updated_at": time.Now(),
	}); err != nil {
		return err
	}
	return nil
}

// Delete 删除操作
func (c *Instance) Delete(id uint64) error {
	mSysRole := model.NewSysRole()
	mSysRole.ID = id

	isExist, err := model2.FirstWhere(mSysRole.SysRole)

	if err != nil {
		return err
	} else if !isExist {
		return errors.New("操作错误，角色信息不存在")
	} else if c.TenantID > 0 && c.TenantID != mSysRole.TenantID {
		return errors.New("操作错误，无权限操作")
	}
	if err = model2.Delete(mSysRole.SysRole); err != nil {
		return err
	}
	go utils.TryCatch(func() {
		permission := service.NewPermission(
			service.WithAuthTenant(fmt.Sprintf("%d", mSysRole.TenantID)),
			service.WithAuthRoles([]string{fmt.Sprintf("%d", id)}),
		)
		if _, err = permission.RemoveRolePolicy(); err != nil {
			logger.ErrorF("Casbin 删除租户【%d】下角色【%d】权限信息错误：%v", mSysRole.TenantID, id, err)
			return
		}
	})
	return nil
}

func NewInstance() InstanceHandle {
	return func(session *session.Admin) *Instance {
		return &Instance{Admin: session}
	}
}