Overview The Post struct is the core data model for video content in the app. It conforms to Codable for easy serialization and includes video properties, author details, and social engagement metrics.
Properties Unique identifier for the post
Video file name or reference string
Full URL to the video file. Defaults to empty file URL if not provided.
File extension of the video. Defaults to “mp4” if not provided.
Height of the video in pixels
Width of the video in pixels
Unique identifier of the post author. Mapped from “author” in JSON.
Display name of the post author
Text caption or description for the post
Music track or audio identifier associated with the video
Number of likes the post has received
Number of times the post has been shared
Identifier linking to the post’s comments collection
Initializers Standard Initialization let post = Post ( id : "post123" , video : "video_file.mp4" , videoURL : URL ( string : "https://example.com/video.mp4" ), videoFileExtension : "mp4" , videoHeight : 1920 , videoWidth : 1080 , autherID : "user456" , autherName : "John Doe" , caption : "Check out this amazing video!" , music : "song_xyz" , likeCount : 1250 , shareCount : 45 , commentID : "comments789" )
Dictionary Initialization Create a Post from a dictionary (useful for Firebase or API responses):
let dict: [ String : Any ] = [ "id" : "post123" , "video" : "video_file.mp4" , "videoURL" : "https://example.com/video.mp4" , "videoHeight" : 1920 , "videoWidth" : 1080 , "author" : "user456" , "autherName" : "John Doe" , "caption" : "Amazing video!" , "music" : "song_xyz" , "likeCount" : 1250 , "shareCount" : 45 , "commentID" : "comments789" ] let post = Post ( dictionary : dict)
Methods Computed property that converts the Post instance to a dictionary representation. Returns an empty dictionary if encoding fails. let post = Post ( ... ) let postDict = post. dictionary // Use for Firebase or API uploads
The Post struct conforms to Codable, allowing easy encoding and decoding:
// Encoding let encoder = JSONEncoder () if let jsonData = try ? encoder. encode (post) { // Send jsonData to server } // Decoding let decoder = JSONDecoder () if let post = try ? decoder. decode (Post. self , from : jsonData) { // Use the decoded post }
The autherID property is mapped from the “author” key in JSON: enum CodingKeys : String , CodingKey { case autherID = "author" // Other keys map directly }
Usage Example import Foundation import AVFoundation // Create a new post let newPost = Post ( id : UUID (). uuidString , video : "my_video.mp4" , videoURL : URL ( string : "https://storage.example.com/videos/my_video.mp4" ), videoFileExtension : "mp4" , videoHeight : 1920 , videoWidth : 1080 , autherID : currentUser. uid , autherName : currentUser. name , caption : "Dancing in the rain! #fun #dance" , music : "rain_song_123" , likeCount : 0 , shareCount : 0 , commentID : "comment_collection_xyz" ) // Convert to dictionary for Firebase let postData = newPost. dictionary firebaseRef. child ( "posts" ). child (newPost. id ). setValue (postData)