//
//  CameraDownloadStorageTests.swift
//  suixinkanTests
//

import XCTest
@testable import suixinkan

/// CameraDownloadStorage 相对路径持久化测试。
final class CameraDownloadStorageTests: XCTestCase {
    /// 测试相对路径前缀。
    func testRelativePathUsesCameraDownloadsPrefix() {
        let fileURL = CameraDownloadStorage.downloadsDirectory.appendingPathComponent("1730_test.JPG")
        XCTAssertEqual(CameraDownloadStorage.relativePath(for: fileURL), "CameraDownloads/1730_test.JPG")
    }

    /// 测试相对路径解析。
    func testResolveLocalURLFromRelativePath() {
        let stored = "CameraDownloads/1730_test.JPG"
        let resolved = CameraDownloadStorage.resolveLocalURL(from: stored)
        let expected = CameraDownloadStorage.documentsDirectory.appendingPathComponent(stored)
        XCTAssertEqual(resolved, expected)
    }

    /// 测试旧版绝对路径迁移。
    func testMigrateStoredPathFromLegacyAbsolutePath() throws {
        let fileURL = CameraDownloadStorage.uniqueLocalURL(for: "legacy.jpg")
        try Data("jpeg".utf8).write(to: fileURL)
        defer { try? FileManager.default.removeItem(at: fileURL) }

        let migrated = CameraDownloadStorage.migrateStoredPath(fileURL.path)
        XCTAssertEqual(migrated, "CameraDownloads/\(fileURL.lastPathComponent)")
        XCTAssertEqual(CameraDownloadStorage.resolveLocalURL(from: migrated ?? "")?.path, fileURL.path)
    }

    /// 测试预览 URL 字符串生成。
    func testPreviewURLStringFromRelativePath() throws {
        let fileURL = CameraDownloadStorage.uniqueLocalURL(for: "preview.jpg")
        try Data("jpeg".utf8).write(to: fileURL)
        defer { try? FileManager.default.removeItem(at: fileURL) }

        let stored = CameraDownloadStorage.relativePath(for: fileURL)
        let preview = CameraDownloadStorage.previewURLString(from: stored)
        XCTAssertFalse(preview.isEmpty)
        XCTAssertTrue(preview.hasPrefix("file://"))
    }
}