package db

import (
	"fmt"

	"github.com/synctv-org/synctv/internal/model"
	"gorm.io/gorm"
)

type CreateRoomMemberRelationConfig func(r *model.RoomMember)

func WithRoomMemberStatus(status model.RoomMemberStatus) CreateRoomMemberRelationConfig {
	return func(r *model.RoomMember) {
		r.Status = status
	}
}

func WithRoomMemberRole(role model.RoomMemberRole) CreateRoomMemberRelationConfig {
	return func(r *model.RoomMember) {
		r.Role = role
	}
}

func WithRoomMemberPermissions(permissions model.RoomMemberPermission) CreateRoomMemberRelationConfig {
	return func(r *model.RoomMember) {
		r.Permissions = permissions
	}
}

func WithRoomMemberAdminPermissions(permissions model.RoomAdminPermission) CreateRoomMemberRelationConfig {
	return func(r *model.RoomMember) {
		r.AdminPermissions = permissions
	}
}

func FirstOrCreateRoomMemberRelation(roomID, userID string, conf ...CreateRoomMemberRelationConfig) (*model.RoomMember, error) {
	roomMemberRelation := &model.RoomMember{}
	d := &model.RoomMember{
		RoomID:           roomID,
		UserID:           userID,
		Role:             model.RoomMemberRoleMember,
		Status:           model.RoomMemberStatusPending,
		Permissions:      model.NoPermission,
		AdminPermissions: model.NoAdminPermission,
	}
	for _, c := range conf {
		c(d)
	}
	err := db.Where("room_id = ? AND user_id = ?", roomID, userID).Attrs(d).FirstOrCreate(roomMemberRelation).Error
	return roomMemberRelation, err
}

func GetRoomMember(roomID, userID string) (*model.RoomMember, error) {
	roomMemberRelation := &model.RoomMember{}
	err := db.Where("room_id = ? AND user_id = ?", roomID, userID).First(roomMemberRelation).Error
	return roomMemberRelation, HandleNotFound(err, "room or user")
}

func RoomApprovePendingMember(roomID, userID string) error {
	roomMember := &model.RoomMember{}
	err := db.Where("room_id = ? AND user_id = ?", roomID, userID).First(roomMember).Error
	if err != nil {
		return err
	}
	if roomMember.Status != model.RoomMemberStatusPending {
		return fmt.Errorf("user is not pending")
	}
	err = db.Model(&model.RoomMember{}).
		Where("room_id = ? AND user_id = ? AND status = ?", roomID, userID, model.RoomMemberStatusPending).
		Update("status", model.RoomMemberStatusActive).
		Error
	if err != nil && gorm.ErrRecordNotFound != err {
		return fmt.Errorf("update status failed")
	}
	return err
}

func RoomBanMember(roomID, userID string) error {
	err := db.Model(&model.RoomMember{}).
		Where("room_id = ? AND user_id = ?", roomID, userID).
		Update("status", model.RoomMemberStatusBanned).
		Error
	return HandleNotFound(err, "room or user")
}

func RoomUnbanMember(roomID, userID string) error {
	err := db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Update("status", model.RoomMemberStatusActive).Error
	return HandleNotFound(err, "room or user")
}

func SetMemberPermissions(roomID string, userID string, permission model.RoomMemberPermission) error {
	err := db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Update("permissions", permission).Error
	return HandleNotFound(err, "room or user")
}

func AddMemberPermissions(roomID string, userID string, permission model.RoomMemberPermission) error {
	err := db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Update("permissions", db.Raw("permissions | ?", permission)).Error
	return HandleNotFound(err, "room or user")
}

func RemoveMemberPermissions(roomID string, userID string, permission model.RoomMemberPermission) error {
	err := db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Update("permissions", db.Raw("permissions & ?", ^permission)).Error
	return HandleNotFound(err, "room or user")
}

// func GetAllRoomMembersRelationCount(roomID string, scopes ...func(*gorm.DB) *gorm.DB) (int64, error) {
// 	var count int64
// 	err := db.Model(&model.RoomMember{}).Where("room_id = ?", roomID).Scopes(scopes...).Count(&count).Error
// 	return count, err
// }

func RoomSetAdminPermissions(roomID, userID string, permissions model.RoomAdminPermission) error {
	err := db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Update("admin_permissions", permissions).Error
	return HandleNotFound(err, "room or user")
}

func RoomAddAdminPermissions(roomID, userID string, permissions model.RoomAdminPermission) error {
	err := db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Update("admin_permissions", db.Raw("admin_permissions | ?", permissions)).Error
	return HandleNotFound(err, "room or user")
}

func RoomRemoveAdminPermissions(roomID, userID string, permissions model.RoomAdminPermission) error {
	err := db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Update("admin_permissions", db.Raw("admin_permissions & ?", ^permissions)).Error
	return HandleNotFound(err, "room or user")
}

func RoomSetAdmin(roomID, userID string, permissions model.RoomAdminPermission) error {
	return db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Updates(map[string]interface{}{
		"role":              model.RoomMemberRoleAdmin,
		"permissions":       model.AllPermissions,
		"admin_permissions": permissions,
	}).Error
}

func RoomSetMember(roomID, userID string, permissions model.RoomMemberPermission) error {
	return db.Model(&model.RoomMember{}).Where("room_id = ? AND user_id = ?", roomID, userID).Updates(map[string]interface{}{
		"role":              model.RoomMemberRoleMember,
		"permissions":       permissions,
		"admin_permissions": model.NoAdminPermission,
	}).Error
}