import Foundation
import RastrilloApple
import XCTest
@testable import DocsKit

final class DocumentAssetsTests: XCTestCase {
    @MainActor func testRelativeImageURLsAndCachedImagesUseCurrentDocument() async throws {
        let origin = try XCTUnwrap(URL(string: "https://example.com"))
        XCTAssertEqual(DocsImageStore.resolvedURL(source: "picture.png", documentPath: "/d/first", origin: origin)?.absoluteString, "https://example.com/d/picture.png")
        XCTAssertEqual(DocsImageStore.resolvedURL(source: "?picture=1", documentPath: "/d/second", origin: origin)?.absoluteString, "https://example.com/d/second?picture=1")
        let client = NativeHTTP(origin: origin)
        let store = DocsImageStore()
        let source = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+jRZkAAAAASUVORK5CYII="
        await store.load(sources: [source], client: client, documentPath: "/d/first")
        XCTAssertNotNil(store.images(forDocumentPath: "/d/first", client: client)[source])
        XCTAssertTrue(store.images(forDocumentPath: "/d/second", client: client).isEmpty)
        await store.load(sources: [], client: client, documentPath: "/d/second")
        XCTAssertTrue(store.images.isEmpty)
    }
    @MainActor func testAllTwelveBundledFontFacesResolve() {
        for (key, family) in [("font_sans", "Sans"), ("font_serif", "Serif"), ("font_mono", "Mono")] {
            for (bold, italic, face) in [(false, false, "Regular"), (true, false, "Bold"), (false, true, "Italic"), (true, true, "BoldItalic")] {
                var marks: [String: JSONValue] = [key: .object([:])]
                if bold { marks["strong"] = .object([:]) }
                if italic { marks["em"] = .object([:]) }
                let font = DocsFonts.font(marks: marks, size: 12, heading: false)
                XCTAssertEqual(font.fontName, "Liberation\(family)" + (face == "Regular" ? "" : "-\(face)"))
            }
        }
        XCTAssertEqual(DocsFonts.font(marks: [:], size: 12, heading: false).fontName, "LiberationSans")
        XCTAssertEqual(DocsFonts.font(marks: ["size_24": .object([:])], size: 12, heading: false).pointSize, 24)
    }
    @MainActor func testAttachmentsOccupyOneUTF16UnitAndInvalidImagesFail() {
        XCTAssertEqual(DocsAttachments.image(nil, alt: "long image description").length, 1)
        XCTAssertEqual(DocsAttachments.rule().length, 1)
        XCTAssertNil(DocsAttachments.decode(Data("not an image".utf8)))
        let png = Data(base64Encoded: "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+jRZkAAAAASUVORK5CYII=")!
        XCTAssertNotNil(DocsAttachments.decode(png))
    }
}