//
//  GeminiMarkdownRendererTests.swift
//  GeminiRendererTests
//
//  Created by Shadowfacts on 10/1/21.
//

import XCTest
import GeminiFormat
@testable import GeminiRenderer

class GeminiMarkdownRendererTests: XCTestCase {
    
    private var doc: Document!

    override func setUp() {
        doc = Document(url: URL(string: "gemini://example.com/")!)
    }
    
    func testEscapeToEntities() {
        doc.lines = [.text("<b>hello</b>")]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "&#x3C;b&#x3E;hello&#x3C;/b&#x3E;\n\n")
    }

    func testParagraph() {
        doc.lines = [.text("Hello, world!")]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "Hello, world!\n\n")
    }
    
    func testLink() {
        doc.lines = [.link(URL(string: "gemini://example.com/")!, text: "text")]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "[text](gemini://example.com/)\n\n")
        
        doc.lines = [.link(URL(string: "gemini://example.com/")!, text: nil)]
        let noText = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(noText, "[gemini://example.com/](gemini://example.com/)\n\n")
    }
    
    func testLinksAfterList() {
        doc.lines = [
            .unorderedListItem("a"),
            .unorderedListItem("b"),
            .link(URL(string: "gemini://example.com")!, text: "one"),
            .link(URL(string: "gemini://example.com")!, text: "two"),
        ]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "* a\n* b\n\n[one](gemini://example.com)\n\n[two](gemini://example.com)\n\n")
    }
    
    func testPreformatting() {
        doc.lines = [
            .preformattedToggle(alt: nil),
            .preformattedText("foo"),
            .preformattedText("* bar"),
            .preformattedToggle(alt: nil),
        ]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "```\nfoo\n* bar\n```\n\n")
    }
    
    func testHeading() {
        doc.lines = [
            .heading("One", level: .h1),
            .heading("Two", level: .h2),
        ]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "# One\n\n## Two\n\n")
    }
    
    func testUnorderedList() {
        doc.lines = [
            .text("before"),
            .unorderedListItem("a"),
            .unorderedListItem("b"),
            .unorderedListItem("c"),
            .text("after"),
        ]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "before\n\n* a\n* b\n* c\n\nafter\n\n")
    }
    
    func testQuote() {
        doc.lines = [
            .quote("quoted")
        ]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "> quoted\n\n")
    }
    
    func testSkipBlankLines() {
        doc.lines = [
            .heading("Hello", level: .h1),
            .text(""),
            .text("World"),
        ]
        let markdown = GeminiMarkdownRenderer().renderDocumentToMarkdown(doc)
        XCTAssertEqual(markdown, "# Hello\n\nWorld\n\n")
    }

}