import json
import subprocess
from html.parser import HTMLParser
from pathlib import Path
from urllib.parse import urljoin

from tests.dashboard_bundle import dashboard_bundle_text


FRONTEND = Path(__file__).parents[1] / "frontend"
COMMANDS = FRONTEND / "commands.js"
SEARCH_PREVIEW = FRONTEND / "search-preview.js"
MOBILE_SEARCH_VIEWPORT = FRONTEND / "mobile-search-viewport.js"


class ScriptSourceParser(HTMLParser):
    def __init__(self):
        super().__init__()
        self.sources = []

    def handle_starttag(self, tag, attrs):
        if tag == "script":
            source = dict(attrs).get("src")
            if source:
                self.sources.append(source)


def test_filtered_command_runs_the_matching_action():
    script = f"""
const filterCommands = require({json.dumps(str(COMMANDS))});
let action = '';
const commands = [
  {{ name: 'Open whiteboard', run: () => {{ action = 'whiteboard'; }} }},
  {{ name: 'Refresh now', run: () => {{ action = 'refresh'; }} }},
];
const matches = filterCommands(commands, 'refresh');
if (matches.length !== 1) throw new Error(`expected one match, got ${{matches.length}}`);
matches[0].run();
if (action !== 'refresh') throw new Error(`expected refresh, got ${{action}}`);
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_command_script_resolves_inside_dashboard_subpath():
    parser = ScriptSourceParser()
    parser.feed(dashboard_bundle_text())
    command_source = next(source for source in parser.sources if source.endswith("commands.js"))

    assert urljoin(
        "https://forge.alexanderwhitestone.com/dashboard/", command_source
    ) == "https://forge.alexanderwhitestone.com/dashboard/static/commands.js"


def test_remote_command_search_ignores_stale_responses():
    script = f"""
const filterCommands = require({json.dumps(str(COMMANDS))});
(async () => {{
const pending = new Map();
const states = [];
const controller = filterCommands.createGlobalSearchController({{
  delay: 0,
  search: query => new Promise(resolve => pending.set(query, resolve)),
  onState: state => states.push(state),
}});
controller.setQuery('mobile');
await new Promise(resolve => setTimeout(resolve, 0));
controller.setQuery('release');
await new Promise(resolve => setTimeout(resolve, 0));
pending.get('release')([{{ title: 'Current result' }}]);
await new Promise(resolve => setTimeout(resolve, 0));
pending.get('mobile')([{{ title: 'Stale result' }}]);
await new Promise(resolve => setTimeout(resolve, 0));
const ready = states.filter(state => state.status === 'ready');
if (ready.length !== 1) throw new Error(`expected one ready state, got ${{ready.length}}`);
if (ready[0].query !== 'release' || ready[0].items[0].title !== 'Current result') {{
  throw new Error(`stale response replaced current state: ${{JSON.stringify(ready)}}`);
}}
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""

    subprocess.run(
        ["node", "-e", script],
        check=True, capture_output=True, text=True,
    )


def test_remote_command_search_aborts_superseded_and_cleared_queries():
    script = f"""
const filterCommands = require({json.dumps(str(COMMANDS))});
(async () => {{
const signals = [];
const states = [];
const controller = filterCommands.createGlobalSearchController({{
  delay: 0,
  search: (query, signal) => {{
    signals.push(signal);
    return new Promise((resolve, reject) => signal.addEventListener('abort', () => {{
      const error = new Error('aborted');
      error.name = 'AbortError';
      reject(error);
    }}));
  }},
  onState: state => states.push(state),
}});
controller.setQuery('mobile');
await new Promise(resolve => setTimeout(resolve, 0));
controller.setQuery('release');
if (!signals[0].aborted) throw new Error('superseded request was not aborted');
await new Promise(resolve => setTimeout(resolve, 0));
controller.setQuery('');
if (!signals[1].aborted) throw new Error('cleared query request was not aborted');
await new Promise(resolve => setTimeout(resolve, 0));
if (states.some(state => state.status === 'error')) throw new Error('abort rendered an error');
if (states.at(-1).status !== 'idle') throw new Error('clear did not restore idle state');
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_remote_command_search_preserves_partial_result_status():
    script = f"""
const filterCommands = require({json.dumps(str(COMMANDS))});
(async () => {{
const states = [];
const controller = filterCommands.createGlobalSearchController({{
  delay: 0,
  search: () => Promise.resolve({{ items:[{{ title:'Useful result' }}], partial:true }}),
  onState: state => states.push(state),
}});
controller.setQuery('mobile');
await new Promise(resolve => setTimeout(resolve, 0));
await new Promise(resolve => setTimeout(resolve, 0));
const ready = states.find(state => state.status === 'ready');
if (!ready || ready.items.length !== 1 || ready.partial !== true) {{
  throw new Error('partial result metadata was lost: ' + JSON.stringify(states));
}}
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_command_selection_wraps_for_arrow_keys():
    script = f"""
const commands = require({json.dumps(str(COMMANDS))});
if (commands.nextSelection(-1, 'ArrowDown', 3) !== 0) throw new Error('should select first');
if (commands.nextSelection(2, 'ArrowDown', 3) !== 0) throw new Error('should wrap down');
if (commands.nextSelection(0, 'ArrowUp', 3) !== 2) throw new Error('should wrap up');
if (commands.nextSelection(1, 'Enter', 3) !== 1) throw new Error('other keys should not move');
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_palette_exposes_accessible_global_work_search_under_dashboard_subpath():
    html = dashboard_bundle_text()

    assert 'role="combobox"' in html
    assert 'aria-controls="cmd-results"' in html
    assert 'role="listbox"' in html
    assert "fetch('api/v1/search?q='" in html
    assert "async function searchGlobalWork(query, signal)" in html
    assert "signal," in html
    assert "Some results are temporarily unavailable." in html
    assert urljoin(
        "https://forge.alexanderwhitestone.com/dashboard/",
        "api/v1/search?q=mobile",
    ) == "https://forge.alexanderwhitestone.com/dashboard/api/v1/search?q=mobile"


def test_search_preview_ignores_stale_result_details():
    script = f"""
const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});
(async () => {{
const pending = new Map();
const states = [];
const preview = createSearchPreview({{
  fetchJson: item => new Promise(resolve => pending.set(item.number, resolve)),
  claim: () => Promise.resolve(),
  onState: state => states.push(state),
}});
preview.open({{ repository:'stackchain/api', number:1, kind:'issue' }});
preview.open({{ repository:'stackchain/api', number:2, kind:'issue' }});
pending.get(2)({{ number:2, title:'Current' }});
await new Promise(resolve => setTimeout(resolve, 0));
pending.get(1)({{ number:1, title:'Stale' }});
await new Promise(resolve => setTimeout(resolve, 0));
const ready = states.filter(state => state.status === 'ready');
if (ready.length !== 1 || ready[0].detail.number !== 2) {{
  throw new Error('stale detail replaced current preview: ' + JSON.stringify(ready));
}}
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_search_preview_claim_is_single_flight_and_reports_confirmation():
    script = f"""
const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});
(async () => {{
let claims = 0;
let resolveClaim;
const states = [];
const preview = createSearchPreview({{
  fetchJson: item => Promise.resolve(item),
  claim: () => {{ claims += 1; return new Promise(resolve => {{ resolveClaim = resolve; }}); }},
  onState: state => states.push(state),
}});
await preview.open({{ repository:'stackchain/api', number:42, kind:'issue' }});
const detail = {{ repository:'stackchain/api', number:42, claimable:true }};
const first = preview.claim(detail);
const second = preview.claim(detail);
if (claims !== 1 || first !== second) throw new Error('claim was not single-flight');
resolveClaim({{ assignees:['timmy'] }});
await first;
if (!states.some(state => state.status === 'claimed')) throw new Error('claim confirmation missing');
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_remote_search_selection_opens_native_preview_without_navigation():
    html = dashboard_bundle_text()

    run_item = html.split("function runCommandItem(item)", 1)[1].split(
        "function renderCommands", 1
    )[0]
    assert "searchPreview.open(item.result)" in run_item
    assert "window.location.assign" not in run_item
    remote_branch = run_item.split("} else {", 1)[1]
    assert "qs('#cmd-input').value = ''" not in remote_branch


def test_assigned_issue_preview_hands_off_to_existing_my_work_sheet():
    html = dashboard_bundle_text()

    assert "detail.claimable || (detail.assigned_to_me && detail.kind === 'issue')" in html
    assert "claimButton.textContent = detail.assigned_to_me ? 'Open in My Work' : 'Assign to me'" in html
    assert "openPreviewIssueInMyWork" in html


def test_search_preview_offers_assign_and_start_for_eligible_issues():
    html = dashboard_bundle_text()
    css = (FRONTEND / "dashboard.css").read_text()

    assert 'id="start-search-result"' in html
    assert "startButton.textContent = detail.assigned_to_me ? 'Start in Today' : 'Assign & start'" in html
    assert "const searchAssignAndStart = createAssignAndStart({" in html
    assert "searchAssignAndStart.run(detail, { alreadyOwned: detail.assigned_to_me })" in html
    assert ".search-preview-primary-actions" in css
    assert "grid-template-columns:repeat(2,minmax(0,1fr))" in css


def test_mobile_search_viewport_tracks_keyboard_geometry_without_leaking_listeners():
    script = f"""
const createMobileSearchViewport = require({json.dumps(str(MOBILE_SEARCH_VIEWPORT))});
const listeners = new Map();
const viewport = {{
  height: 430, offsetTop: 17,
  addEventListener: (name, fn) => listeners.set(name, fn),
  removeEventListener: (name, fn) => {{ if (listeners.get(name) === fn) listeners.delete(name); }},
}};
const values = new Map();
const palette = {{ style: {{
  setProperty: (name, value) => values.set(name, value),
  removeProperty: name => values.delete(name),
}} }};
const results = {{ scrollTop: 73 }};
const controller = createMobileSearchViewport({{
  palette, results, viewport, mediaQuery: {{ matches: true }},
  schedule: fn => fn(),
}});
controller.open();
if (values.get('--search-viewport-top') !== '17px') throw new Error('viewport offset was not applied');
if (values.get('--search-viewport-height') !== '430px') throw new Error('viewport height was not applied');
if (listeners.size !== 2) throw new Error('viewport listeners were not attached once');
controller.rememberScroll();
results.scrollTop = 0;
controller.restoreScroll();
if (results.scrollTop !== 73) throw new Error('result scroll position was not restored');
controller.open();
if (listeners.size !== 2) throw new Error('duplicate viewport listeners were attached');
controller.close();
if (listeners.size !== 0 || values.size !== 0) throw new Error('viewport state leaked after close');
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_mobile_search_is_a_keyboard_safe_workspace_wired_to_preview_history():
    html = dashboard_bundle_text()
    css = (FRONTEND / "dashboard.css").read_text()

    assert 'class="cmd-palette-header"' in html
    assert 'id="close-command-palette"' in html
    assert 'style="margin-top:8px;max-height:min(65vh,520px);overflow-y:auto;"' not in html
    assert 'src="static/mobile-search-viewport.js"' in html
    assert "height:var(--search-viewport-height,100dvh)" in css
    assert "top:var(--search-viewport-top,0px)" in css
    assert "#cmd-results { flex:1; min-height:0; overflow-y:auto;" in css
    assert "mobileSearchViewport.rememberScroll()" in html
    assert "mobileSearchViewport.restoreScroll()" in html
    assert "mobileSearchViewport.open()" in html
    assert "mobileSearchViewport.close()" in html