From b1937bfc16675ca6818421f103bb7329bf066836 Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Tue, 30 Jun 2026 22:43:11 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E6=96=B0=E5=A2=9Eavai?=
 =?UTF-8?q?lability=E5=AD=97=E6=AE=B5=E5=AF=BC=E8=87=B4JSON=E8=A7=A3?=
 =?UTF-8?q?=E7=A0=81=E5=A4=B1=E8=B4=A5?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

自定义init(from decoder:)，为新增字段提供默认值：
- availability默认.unknown
- 兼容旧版JSON数据，避免解码失败清空媒体库
---
 Sources/MediaLibrary.swift | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Sources/MediaLibrary.swift b/Sources/MediaLibrary.swift
index b7ba478..fa9ca2b 100644
--- a/Sources/MediaLibrary.swift
+++ b/Sources/MediaLibrary.swift
@@ -24,6 +24,11 @@ struct LibraryItem: Identifiable, Codable, Equatable {
     var logoURL: String?      // M3U tvg-logo
     var availability: StreamAvailability  // 流可用性
     
+    enum CodingKeys: String, CodingKey {
+        case id, url, name, type, lastPosition, liked, disliked, tags
+        case addedAt, group, logoURL, availability
+    }
+    
     init(id: String = UUID().uuidString, url: String, name: String,
          type: String = "url", lastPosition: Double = 0,
          liked: Bool = false, disliked: Bool = false,
@@ -43,6 +48,22 @@ struct LibraryItem: Identifiable, Codable, Equatable {
         self.availability = availability
     }
     
+    init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        id = try container.decode(String.self, forKey: .id)
+        url = try container.decode(String.self, forKey: .url)
+        name = try container.decode(String.self, forKey: .name)
+        type = try container.decode(String.self, forKey: .type)
+        lastPosition = try container.decodeIfPresent(Double.self, forKey: .lastPosition) ?? 0
+        liked = try container.decodeIfPresent(Bool.self, forKey: .liked) ?? false
+        disliked = try container.decodeIfPresent(Bool.self, forKey: .disliked) ?? false
+        tags = try container.decodeIfPresent([String].self, forKey: .tags) ?? []
+        addedAt = try container.decode(Date.self, forKey: .addedAt)
+        group = try container.decodeIfPresent(String.self, forKey: .group)
+        logoURL = try container.decodeIfPresent(String.self, forKey: .logoURL)
+        availability = try container.decodeIfPresent(StreamAvailability.self, forKey: .availability) ?? .unknown
+    }
+    
     static func == (lhs: LibraryItem, rhs: LibraryItem) -> Bool { lhs.id == rhs.id }
 }