use pulldown_cmark::{Event, Options, Parser, Tag};

fn main() {
    let markdown_input = concat!(
        "# My Heading\n",
        "\n",
        "My paragraph.\n",
        "\n",
        "* a\n",
        "* b\n",
        "* c\n",
        "\n",
        "1. d\n",
        "2. e\n",
        "3. f\n",
        "\n",
        "> my block quote\n",
        "\n",
        "```\n",
        "my code block\n",
        "```\n",
        "\n",       
        "*emphasis*\n",
        "**strong**\n",
        "~~strikethrough~~\n",
        "[My Link](http://example.com)\n",
        "![My Image](http://example.com/image.jpg)\n",
        "\n",
        "| a | b |\n",
        "| - | - |\n",
        "| c | d |\n",
        "\n",
        "hello[^1]\n",
        "[^1]: my footnote\n",
    );
    println!("\nParsing the following markdown string:\n{}\n", markdown_input);

    // Set up the parser. We can treat is as any other iterator. 
    // For each event, we print its details, such as the tag or string.
    // This filter simply returns the same event without any changes;
    // you can compare the `event-filter` example which alters the output.
    let parser = Parser::new_ext(markdown_input, Options::all())
    .map(|event| {
        match &event {
            Event::Start(tag) => {
                match tag {
                    Tag::Heading(heading_level, fragment_identifier, class_list) => println!("Heading heading_level: {} fragment identifier: {:?} classes: {:?}", heading_level, fragment_identifier, class_list),
                    Tag::Paragraph => println!("Paragraph"),                       
                    Tag::List(ordered_list_first_item_number) => println!("List ordered_list_first_item_number: {:?}", ordered_list_first_item_number),
                    Tag::Item => println!("Item (this is a list item)"),
                    Tag::Emphasis => println!("Emphasis (this is a span tag)"),
                    Tag::Strong => println!("Strong (this is a span tag)"),
                    Tag::Strikethrough => println!("Strikethrough (this is a span tag)"),
                    Tag::BlockQuote => println!("BlockQuote"),
                    Tag::CodeBlock(code_block_kind) => println!("CodeBlock code_block_kind: {:?}", code_block_kind),
                    Tag::Link(link_type, url, title) => println!("Link link_type: {:?} url: {} title: {}", link_type, url, title),
                    Tag::Image(link_type, url, title) => println!("Image link_type: {:?} url: {} title: {}", link_type, url, title),
                    Tag::Table(column_text_alignment_list) => println!("Table column_text_alignment_list: {:?}", column_text_alignment_list),
                    Tag::TableHead => println!("TableHead (contains TableRow tags"),
                    Tag::TableRow => println!("TableRow (contains TableCell tags)"),
                    Tag::TableCell => println!("TableCell (contains inline tags)"),
                    Tag::FootnoteDefinition(label) => println!("FootnoteDefinition label: {}", label),
                }
            },
            _ => ()
        };
        event
    });
   
    let mut html_output = String::new();
    pulldown_cmark::html::push_html(&mut html_output, parser);
    println!("\nHTML output:\n{}\n", &html_output);
}