package models import ( "time" "code.nonshy.com/nonshy/website/pkg/log" "gorm.io/gorm" ) // Comment table - in forum threads, on profiles or photos, etc. type Comment struct { ID uint64 `gorm:"primaryKey"` TableName string `gorm:"index"` TableID uint64 `gorm:"index"` UserID uint64 `gorm:"index"` User User Message string CreatedAt time.Time UpdatedAt time.Time } // CommentableTables are the set of table names that allow comments (via the // generic "/comments" URI which accepts a table_name param) var CommentableTables = map[string]interface{}{ "photos": nil, } // Preload related tables for the forum (classmethod). func (c *Comment) Preload() *gorm.DB { return DB.Preload("User.ProfilePhoto") } // GetComment by ID. func GetComment(id uint64) (*Comment, error) { c := &Comment{} result := c.Preload().First(&c, id) return c, result.Error } // GetComments queries a set of comment IDs and returns them mapped. func GetComments(IDs []uint64) (map[uint64]*Comment, error) { var ( mt = map[uint64]*Comment{} ts = []*Comment{} ) result := (&Comment{}).Preload().Where("id IN ?", IDs).Find(&ts) for _, row := range ts { mt[row.ID] = row } return mt, result.Error } // AddComment about anything. func AddComment(user *User, tableName string, tableID uint64, message string) (*Comment, error) { c := &Comment{ TableName: tableName, TableID: tableID, User: *user, Message: message, } result := DB.Create(c) return c, result.Error } // PaginateComments provides a page of comments on something. func PaginateComments(user *User, tableName string, tableID uint64, pager *Pagination) ([]*Comment, error) { var ( cs = []*Comment{} query = (&Comment{}).Preload() ) query = query.Where( "table_name = ? AND table_id = ?", tableName, tableID, ).Order(pager.Sort) query.Model(&Comment{}).Count(&pager.Total) result := query.Offset(pager.GetOffset()).Limit(pager.PerPage).Find(&cs) return cs, result.Error } // ListComments returns a complete set of comments without paging. func ListComments(tableName string, tableID uint64) ([]*Comment, error) { var cs []*Comment result := (&Comment{}).Preload().Where( "table_name = ? AND table_id = ?", tableName, tableID, ).Order("created_at asc").Find(&cs) return cs, result.Error } // Save a comment. func (c *Comment) Save() error { return DB.Save(c).Error } // Delete a comment. func (c *Comment) Delete() error { return DB.Delete(c).Error } type CommentCountMap map[uint64]int64 // MapCommentCounts collects total numbers of comments over a set of table IDs. Returns a // map of table ID (uint64) to comment counts for each (int64). func MapCommentCounts(tableName string, tableIDs []uint64) CommentCountMap { var result = CommentCountMap{} // Initialize the result set. for _, id := range tableIDs { result[id] = 0 } // Hold the result of the grouped count query. type group struct { ID uint64 Comments int64 } var groups = []group{} // Map the counts of comments to each of these IDs. if res := DB.Table( "comments", ).Select( "table_id AS id, count(id) AS comments", ).Where( "table_name = ? AND table_id IN ?", tableName, tableIDs, ).Group("table_id").Scan(&groups); res.Error != nil { log.Error("MapCommentCounts: count query: %s", res.Error) } // Map the counts back in. for _, row := range groups { result[row.ID] = row.Comments } return result } // Get a comment count for the given table ID from the map. func (cc CommentCountMap) Get(id uint64) int64 { if value, ok := cc[id]; ok { return value } return 0 }