#!/bin/bash

set -e

check() {
	input="$(mktemp)"
	expected_output="$(mktemp)"
	output="$(mktemp)"

	current="input"
	while IFS='$\n' read -r line; do
		if [[ "$line" == "---" ]]; then
			current="output"
		elif [[ "$current" == "input" ]]; then
			echo "$line" >> "$input"
		else
			echo "$line" >> "$expected_output"
		fi
    done

	awk -f markdown.awk "$input" >> "$output"

	result="success"

	if ! cmp -s "$output" "$expected_output"; then
		echo "FAIL"
		echo "--- input"
		cat "$input"
		echo "--- expected"
		cat "$expected_output"
		echo "--- got"
		cat "$output"
		echo "---"
		result="fail"
	else
		echo "SUCCESS"
	fi

	rm "$input"
	rm "$expected_output"
	rm "$output"

	if [[ "$result" == "fail" ]]; then
		exit 1
	fi
}

check <<-EOF
This is a simple sentence.
---
<p>This is a simple sentence.</p>
EOF


check <<-EOF
This is a
simple sentence.
---
<p>This is a simple sentence.</p>
EOF

check <<-EOF
First paragraph.

Second paragraph.
---
<p>First paragraph.</p>
<p>Second paragraph.</p>
EOF

check <<-EOF
# Header
body
---
<h1>Header</h1>
<p>body</p>
EOF

check <<-EOF
# Header1
## Header2
### Header3
---
<h1>Header1</h1>
<h2>Header2</h2>
<h3>Header3</h3>
EOF

check <<-EOF
# Header ### 
---
<h1>Header</h1>
EOF

check <<-EOF
underlined header 1
===================

underlined header 2
-------------------
---
<h1>underlined header 1</h1>
<h2>underlined header 2</h2>
EOF

check <<-EOF
**bold**
---
<p><strong>bold</strong></p>
EOF

check <<-EOF
**bold
multiline**
---
<p><strong>bold multiline</strong></p>
EOF

check <<-EOF
**bold
---
<p>**bold</p>
EOF

check <<-"EOF"
```
first line of code

second line of code

> < &
```
---
<pre><code>
first line of code

second line of code

&gt; &lt; &amp;</code></pre>
EOF

check <<-"EOF"
```
first line of code

second line of code
---
<p>``` first line of code  second line of code</p>
EOF

check <<-"EOF"
This is `inline code` block
---
<p>This is <code>inline code</code> block</p>
EOF

check <<-"EOF"
    code
    
    indented by

    spaces
---
<pre><code>code

indented by

spaces</code></pre>
EOF

check <<-"EOF"
asdf

* foo
* bar
- baz
+ qux
---
<p>asdf</p>
<ul>
<li>foo</li>
<li>bar</li>
<li>baz</li>
<li>qux</li>
</ul>
EOF

check <<-"EOF"
asdf

* bullet 1
* bullet
  2
---
<p>asdf</p>
<ul>
<li>bullet 1</li>
<li>bullet 2</li>
</ul>
EOF

check <<-"EOF"
asdf

1. number 1
2. number
  2
---
<p>asdf</p>
<ol>
<li>number 1</li>
<li>number 2</li>
</ol>
EOF

check <<-"EOF"
* **basic formatting**
* ```in list```
---
<ul>
<li><strong>basic formatting</strong></li>
<li><code>in list</code></li>
</ul>
EOF

check <<-"EOF"
* first
level 1
    * second
  level 1
  * second level 2
    * third level
* first level
  2
---
<ul>
<li>first level 1
<ul>
<li>second level 1</li>
<li>second level 2
<ul>
<li>third level</li>
</ul></li>
</ul></li>
<li>first level 2</li>
</ul>
EOF

check <<-"EOF"
* bullet1
1. number1
* bullet2
2. number2
---
<ul>
<li>bullet1</li>
</ul>
<ol>
<li>number1</li>
</ol>
<ul>
<li>bullet2</li>
</ul>
<ol>
<li>number2</li>
</ol>
EOF

check <<-"EOF"
> foo
> bar
---
<blockquote>
<p>foo bar</p>
</blockquote>
EOF

check <<-"EOF"
> foo
> 
> > bar
> > baz
---
<blockquote>
<p>foo</p>
<blockquote>
<p>bar baz</p>
</blockquote>
</blockquote>
EOF

check <<-"EOF"
> foo
> 
>> bar
>> baz
---
<blockquote>
<p>foo</p>
<blockquote>
<p>bar baz</p>
</blockquote>
</blockquote>
EOF

check <<-"EOF"
>     code blocks
>     in blockquotes
---
<blockquote>
<pre><code>code blocks
in blockquotes</code></pre>
</blockquote>
EOF

check <<-"EOF"
> A list within a blockquote:
>
> *	asterisk 1
> *	asterisk 2
> *	asterisk 3
---
<blockquote>
<p>A list within a blockquote:</p>
<ul>
<li>asterisk 1</li>
<li>asterisk 2</li>
<li>asterisk 3</li>
</ul>
</blockquote>
EOF

check <<-"EOF"
foo&bar

1 < 2

2 > 1
---
<p>foo&amp;bar</p>
<p>1 &lt; 2</p>
<p>2 &gt; 1</p>
EOF

check <<-"EOF"
foo <a href="" ></a> bar
---
<p>foo <a href="" ></a> bar</p>
EOF

check <<-"EOF"
\\

\`

\*

\_

\{

\}

\[

\]

\(

\)

\>

\#

\.

\!

\+

\-
---
<p>\</p>
<p>`</p>
<p>*</p>
<p>_</p>
<p>{</p>
<p>}</p>
<p>[</p>
<p>]</p>
<p>(</p>
<p>)</p>
<p>&gt;</p>
<p>#</p>
<p>.</p>
<p>!</p>
<p>+</p>
<p>-</p>
EOF

check <<-"EOF"
`This shouldn't be escaped: \*`
---
<p><code>This shouldn't be escaped: \*</code></p>
EOF

check <<-"EOF"
```
This shouldn't be escaped: \*
```
---
<pre><code>
This shouldn't be escaped: \*</code></pre>
EOF

check <<-"EOF"
Spimple link: [foo](/bar)

Link with title: [foo](/bar "baz")
---
<p>Spimple link: <a href="/bar">foo</a></p>
<p>Link with title: <a href="/bar" title="baz">foo</a></p>
EOF

echo 
echo "All tests passed"