140 lines
4.5 KiB
Swift
140 lines
4.5 KiB
Swift
//
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// https://mczachurski.dev
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// Copyright © 2023 Marcin Czachurski and the repository contributors.
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// Licensed under the Apache License 2.0.
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//
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import Foundation
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import PixelfedKit
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@Observable public class AttachmentModel: Identifiable {
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public let id: String
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public let type: MediaAttachment.MediaAttachmentType
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public let url: URL
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public let previewUrl: URL?
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public let remoteUrl: URL?
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public let description: String?
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public let blurhash: String?
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public let meta: Metadata?
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public let metaImageWidth: Int32?
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public let metaImageHeight: Int32?
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public var exifCamera: String?
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public var exifCreatedDate: String?
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public var exifExposure: String?
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public var exifLens: String?
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public var data: Data?
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public init(id: String,
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type: MediaAttachment.MediaAttachmentType,
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url: URL,
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previewUrl: URL? = nil,
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remoteUrl: URL? = nil,
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description: String? = nil,
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blurhash: String? = nil,
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meta: Metadata? = nil,
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exifCamera: String? = nil,
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exifCreatedDate: String? = nil,
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exifExposure: String? = nil,
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exifLens: String? = nil,
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metaImageWidth: Int32? = nil,
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metaImageHeight: Int32? = nil,
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data: Data? = nil
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) {
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self.id = id
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self.type = type
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self.url = url
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self.previewUrl = previewUrl
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self.remoteUrl = remoteUrl
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self.description = description
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self.blurhash = blurhash
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self.meta = meta
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self.exifCamera = exifCamera
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self.exifCreatedDate = exifCreatedDate
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self.exifExposure = exifExposure
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self.exifLens = exifLens
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self.metaImageWidth = metaImageWidth
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self.metaImageHeight = metaImageHeight
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self.data = data
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}
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init(attachment: MediaAttachment) {
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self.id = attachment.id
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self.type = attachment.type
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self.url = attachment.url
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self.previewUrl = attachment.previewUrl
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self.remoteUrl = attachment.remoteUrl
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self.description = attachment.description
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self.blurhash = attachment.blurhash
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self.meta = attachment.meta
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self.data = nil
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self.exifCamera = nil
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self.exifCreatedDate = nil
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self.exifExposure = nil
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self.exifLens = nil
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if let width = (attachment.meta as? ImageMetadata)?.original?.width {
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self.metaImageWidth = Int32(width)
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} else {
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self.metaImageWidth = nil
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}
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if let height = (attachment.meta as? ImageMetadata)?.original?.height {
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self.metaImageHeight = Int32(height)
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} else {
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self.metaImageHeight = nil
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}
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}
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public func set(data: Data) {
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self.data = data
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// TODO: Uncomment/remove when exif metadata will be supported.
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// self.setExifProperties()
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}
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private func setExifProperties() {
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if let exifProperties = self.data?.getExifData() {
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if let make = exifProperties.getExifValue("Make"), let model = exifProperties.getExifValue("Model") {
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self.exifCamera = "\(make) \(model)"
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}
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// "Lens" or "Lens Model"
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if let lens = exifProperties.getExifValue("Lens") {
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self.exifLens = lens
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}
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if let createData = exifProperties.getExifValue("CreateDate") {
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self.exifCreatedDate = createData
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}
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if let focalLenIn35mmFilm = exifProperties.getExifValue("FocalLenIn35mmFilm"),
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let fNumber = exifProperties.getExifValue("FNumber")?.calculateExifNumber(),
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let exposureTime = exifProperties.getExifValue("ExposureTime"),
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let photographicSensitivity = exifProperties.getExifValue("PhotographicSensitivity") {
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self.exifExposure = "\(focalLenIn35mmFilm)mm, f/\(fNumber), \(exposureTime)s, ISO \(photographicSensitivity)"
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}
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}
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}
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}
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extension [AttachmentModel] {
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public func getHighestImage() -> AttachmentModel? {
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var attachment = self.first
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var imgHeight = 0.0
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for item in self {
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let attachmentheight = Double((item.meta as? ImageMetadata)?.original?.height ?? 0)
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if attachmentheight > imgHeight {
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attachment = item
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imgHeight = attachmentheight
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}
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}
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return attachment
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}
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}
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