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

import XCTest
@testable import suixinkan

/// CameraDownloadStorage 相对路径持久化测试。
final class CameraDownloadStorageTests: XCTestCase {
    /// 测试 scoped 原图相对路径前缀。
    func testRelativePathUsesScopedOriginalsPrefix() {
        let scope = CameraDownloadStorage.Scope(accountKey: "user_101", albumID: 6603)
        defer { CameraDownloadStorage.removeScopeDirectory(for: scope) }

        let fileURL = CameraDownloadStorage.originalsDirectory(for: scope).appendingPathComponent("1730_test.JPG")
        XCTAssertEqual(
            CameraDownloadStorage.relativePath(for: fileURL),
            "CameraDownloads/user_101/6603/originals/1730_test.JPG"
        )
    }

    /// 测试相对路径解析。
    func testResolveLocalURLFromRelativePath() {
        let stored = "CameraDownloads/user_101/6603/originals/1730_test.JPG"
        let resolved = CameraDownloadStorage.resolveLocalURL(from: stored)
        let expected = CameraDownloadStorage.documentsDirectory.appendingPathComponent(stored)
        XCTAssertEqual(resolved, expected)
    }

    /// 测试 scoped 目录路径。
    func testScopeDirectoryPath() {
        let scope = CameraDownloadStorage.Scope(accountKey: "user_101", albumID: 6603)
        defer { CameraDownloadStorage.removeScopeDirectory(for: scope) }

        let directory = CameraDownloadStorage.scopeDirectory(for: scope)
        XCTAssertTrue(directory.path.hasSuffix("CameraDownloads/user_101/6603"))
    }

    /// 测试唯一原图 URL 生成。
    func testUniqueLocalURLUsesScopedOriginalsDirectory() {
        let scope = CameraDownloadStorage.Scope(accountKey: "user_101", albumID: 6603)
        defer { CameraDownloadStorage.removeScopeDirectory(for: scope) }

        let url = CameraDownloadStorage.uniqueLocalURL(for: "DSC.JPG", scope: scope)
        XCTAssertTrue(url.path.contains("/CameraDownloads/user_101/6603/originals/"))
        XCTAssertTrue(url.lastPathComponent.hasSuffix("_DSC.JPG"))
    }

    /// 测试删除 scoped 目录。
    func testRemoveScopeDirectory() throws {
        let scope = CameraDownloadStorage.Scope(accountKey: "user_101", albumID: 6603)
        let fileURL = CameraDownloadStorage.uniqueLocalURL(for: "remove_test.JPG", scope: scope)
        try Data(repeating: 0xFF, count: 8).write(to: fileURL)

        let directory = CameraDownloadStorage.scopeDirectory(for: scope)
        XCTAssertTrue(FileManager.default.fileExists(atPath: directory.path))

        CameraDownloadStorage.removeScopeDirectory(for: scope)
        XCTAssertFalse(FileManager.default.fileExists(atPath: directory.path))
    }

    /// 测试预览 URL 字符串。
    func testPreviewURLStringFromExistingFile() throws {
        let scope = CameraDownloadStorage.Scope(accountKey: "user_101", albumID: 6603)
        defer { CameraDownloadStorage.removeScopeDirectory(for: scope) }

        let fileURL = CameraDownloadStorage.uniqueLocalURL(for: "preview.JPG", scope: scope)
        try Data(repeating: 0xFF, count: 8).write(to: fileURL)

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