"""Inline markup mapping and WML's escaping rules."""
from __future__ import annotations

import pytest

from wapdown.renderers.wml.inline import escape_wml, process_inline


class TestEscaping:
    def test_xml_significant_characters(self):
        assert escape_wml('a & b < c > d "e"') == "a &amp; b &lt; c &gt; d &quot;e&quot;"

    def test_dollar_is_doubled(self):
        # WML uses $ to introduce a variable substitution, so a literal $
        # must be written $$ or the device eats the following word.
        assert escape_wml("Permit fee: $5") == "Permit fee: $$5"

    def test_ampersand_escaped_before_other_entities(self):
        assert escape_wml("<") == "&lt;"
        assert "&amp;lt;" not in escape_wml("a & b")


class TestEmphasis:
    @pytest.mark.parametrize(
        ("source", "expected"),
        [
            ("**bold**", "<b>bold</b>"),
            ("__bold__", "<b>bold</b>"),
            ("*italic*", "<i>italic</i>"),
            ("_italic_", "<i>italic</i>"),
            ("~~struck~~", "struck"),  # no WML equivalent, markers dropped
            ("`code`", "code"),
        ],
    )
    def test_mapping(self, source, expected):
        assert process_inline(source) == expected

    def test_code_span_contents_are_not_reinterpreted(self):
        assert process_inline("`a *b* c`") == "a *b* c"


class TestLinks:
    def test_basic_link(self):
        assert process_inline("[call](tel:+15555550123)") == (
            '<a href="tel:+15555550123">call</a>'
        )

    def test_underscores_in_url_survive(self):
        # Regression: emphasis patterns used to run before LINK_RE, so
        # UNDERLINE_EM_RE shredded `v1_2_3` into `v1<i>2</i>3` inside the href.
        result = process_inline("[notes](https://example.com/v1_2_3/x.html)")
        assert result == '<a href="https://example.com/v1_2_3/x.html">notes</a>'
        assert "<i>" not in result

    def test_asterisks_in_url_survive(self):
        result = process_inline("[log](https://ci.example.com/job/a*b*c/log)")
        assert "a*b*c" in result
        assert "<i>" not in result

    def test_label_emphasis_is_stripped_not_translated(self):
        # WML 1.3 declares <a> as (#PCDATA | br | img)*: there is nowhere
        # valid to put a <b> inside a link label.
        assert process_inline("[**go** now](http://x.test/)") == (
            '<a href="http://x.test/">go now</a>'
        )

    def test_url_is_escaped_for_attribute_use(self):
        assert process_inline("[q](http://x.test/?a=1&b=2)") == (
            '<a href="http://x.test/?a=1&amp;b=2">q</a>'
        )


class TestImages:
    def test_keep_is_the_default(self):
        assert process_inline("![Map](map.png)") == '<img src="map.png" alt="Map"/>'

    def test_alt_policy_replaces_non_wbmp(self, capsys):
        assert process_inline("![Map](map.png)", images="alt") == "Map"
        assert "non-WBMP" in capsys.readouterr().err

    def test_drop_policy_removes_non_wbmp(self, capsys):
        assert process_inline("![Map](map.png)", images="drop") == ""
        assert "dropped" in capsys.readouterr().err

    @pytest.mark.parametrize("policy", ["alt", "drop"])
    def test_wbmp_always_survives(self, policy):
        result = process_inline("![Icon](icon.wbmp)", images=policy)
        assert result == '<img src="icon.wbmp" alt="Icon"/>'

    def test_wbmp_detected_past_a_query_string(self):
        assert '<img' in process_inline("![I](i.wbmp?v=2)", images="drop")

    def test_image_is_not_parsed_as_a_link(self):
        assert process_inline("![Map](map.png)").startswith("<img")