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

    assert '<fieldset class="cmd-search-scope"' in html
    assert '<legend>Filter search results</legend>' in html
    assert '<label for="cmd-search-kind">Type</label>' in html
    assert '<select id="cmd-search-kind"' in html
    assert '<option value="pull">Pull requests</option>' in html
    assert '<label for="cmd-search-state">Status</label>' in html
    assert '<select id="cmd-search-state"' in html
    assert '.cmd-search-scope' in css
    assert '#cmd-search-kind, #cmd-search-state { min-height:44px;' in css
    assert "commandSearch.setScope(scope)" in html
    assert "taskOverlayHistory.update({ scope })" in html
    assert "'&kind=' + encodeURIComponent(scope.kind)" in html
    assert "'&state=' + encodeURIComponent(scope.state)" in html


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_scope_change_aborts_and_restarts_without_stale_results():
    script = f"""
const filterCommands = require({json.dumps(str(COMMANDS))});
(async () => {{
const pending = [];
const states = [];
const controller = filterCommands.createGlobalSearchController({{
  delay: 0,
  search: (query, signal, page, scope) => new Promise(resolve => pending.push({{query, signal, page, scope, resolve}})),
  onState: state => states.push(state),
}});
controller.setQuery('mobile');
await new Promise(resolve => setTimeout(resolve, 0));
controller.setScope({{kind:'pull', state:'open'}});
await new Promise(resolve => setTimeout(resolve, 0));
if (!pending[0].signal.aborted) throw new Error('scope change did not abort old request');
if (JSON.stringify(pending[1].scope) !== JSON.stringify({{kind:'pull', state:'open'}})) {{
  throw new Error('new request did not receive scope');
}}
pending[1].resolve({{items:[{{kind:'pull',repository:'a/b',number:2}}],has_more:false,next_page:2}});
pending[0].resolve({{items:[{{kind:'issue',repository:'a/b',number:1}}],has_more:false,next_page:2}});
await new Promise(resolve => setTimeout(resolve, 0));
const ready = states.filter(state => state.status === 'ready').at(-1);
if (ready.items.length !== 1 || ready.items[0].kind !== 'pull') throw new Error('stale scope result entered list');
if (ready.scope.kind !== 'pull' || ready.scope.state !== 'open') throw new Error('scope missing from 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_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_remote_command_search_appends_deduplicated_pages_and_ignores_stale_load_more():
    script = f"""
const filterCommands = require({json.dumps(str(COMMANDS))});
(async () => {{
const pending = new Map();
const states = [];
const controller = filterCommands.createGlobalSearchController({{
  delay: 0,
  search: (query, signal, page) => new Promise(resolve => pending.set(query + ':' + page, resolve)),
  onState: state => states.push(state),
}});
controller.setQuery('mobile');
await new Promise(resolve => setTimeout(resolve, 0));
pending.get('mobile:1')({{ items:[{{kind:'issue',repository:'a/b',number:1}}], has_more:true, next_page:2 }});
await new Promise(resolve => setTimeout(resolve, 0));
controller.loadMore();
await new Promise(resolve => setTimeout(resolve, 0));
controller.setQuery('release');
await new Promise(resolve => setTimeout(resolve, 0));
pending.get('mobile:2')({{ items:[{{kind:'issue',repository:'a/b',number:1}},{{kind:'pull',repository:'a/b',number:2}}], has_more:false, next_page:3 }});
pending.get('release:1')({{ items:[{{kind:'issue',repository:'a/b',number:3}}], has_more:false, next_page:2 }});
await new Promise(resolve => setTimeout(resolve, 0));
const ready = states.filter(state => state.status === 'ready').at(-1);
if (ready.query !== 'release' || ready.items.length !== 1 || ready.items[0].number !== 3) {{
  throw new Error('stale page entered current query: ' + 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, page = 1, scope" in html
    assert "signal," in html
    assert "Some results are temporarily unavailable." in html
    assert 'id="cmd-load-more"' 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)),
  mutate: () => 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),
  mutate: (_detail, action) => {{ if (action !== 'claim') throw new Error('wrong action'); 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_search_preview_reopen_is_single_flight_and_reports_confirmation():
    script = f"""
const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});
(async () => {{
let reopens = 0;
let resolveReopen;
const states = [];
const preview = createSearchPreview({{
  fetchJson: item => Promise.resolve(item),
  mutate: (_detail, action) => {{ if (action !== 'reopen') throw new Error('wrong action'); reopens += 1; return new Promise(resolve => {{ resolveReopen = resolve; }}); }},
  onState: state => states.push(state),
}});
const detail = {{ repository:'stackchain/api', number:42, reopenable:true }};
await preview.open(detail);
const first = preview.reopen(detail);
const second = preview.reopen(detail);
if (reopens !== 1 || first !== second) throw new Error('reopen was not single-flight');
resolveReopen({{ state:'open', assignees:['timmy'] }});
await first;
if (!states.some(state => state.status === 'reopened')) throw new Error('reopen confirmation missing');
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""

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


def test_search_preview_shares_canonical_url_without_closing_the_preview():
    script = f"""
const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});
(async () => {{
const calls = [];
const states = [];
const preview = createSearchPreview({{
  fetchJson: item => Promise.resolve(item),
  mutate: () => Promise.resolve(),
  share: async url => {{ calls.push(url); return 'shared'; }},
  onState: state => states.push(state),
}});
const detail = {{ repository:'stackchain/api', number:42, kind:'issue' }};
await preview.open(detail);
const result = await preview.share('https://forge.example/dashboard/?search=release&preview=issue%3Astackchain%2Fapi%3A42');
process.stdout.write(JSON.stringify({{ result, calls, states }}));
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""
    result = subprocess.run(["node", "-e", script], capture_output=True, text=True)

    assert result.returncode == 0, result.stderr
    payload = json.loads(result.stdout)
    assert payload["result"] == "shared"
    assert payload["calls"] == [
        "https://forge.example/dashboard/?search=release&preview=issue%3Astackchain%2Fapi%3A42"
    ]
    assert payload["states"][-1]["status"] == "shared"
    assert payload["states"][-1]["detail"]["number"] == 42


def test_search_preview_share_is_single_flight_and_cancellation_restores_ready_context():
    script = f"""
const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});
(async () => {{
let calls = 0;
let rejectShare;
const states = [];
const preview = createSearchPreview({{
  fetchJson: item => Promise.resolve(item), mutate: () => Promise.resolve(),
  share: () => {{ calls += 1; return new Promise((_resolve, reject) => rejectShare = reject); }},
  onState: state => states.push(state),
}});
await preview.open({{ repository:'stackchain/api', number:42, kind:'issue' }});
const first = preview.share('https://forge.example/dashboard/?search=x');
const second = preview.share('https://forge.example/dashboard/?search=x');
const canceled = new Error('canceled'); canceled.name = 'AbortError'; rejectShare(canceled);
await Promise.allSettled([first, second]);
const state = states.at(-1);
process.stdout.write(JSON.stringify({{ calls, same:first === second, status:state.status,
  item:state.item, detail:state.detail, errorName:state.error?.name }}));
}})().catch(error => {{ console.error(error); process.exit(1); }});
"""
    result = subprocess.run(["node", "-e", script], capture_output=True, text=True)

    assert result.returncode == 0, result.stderr
    assert json.loads(result.stdout) == {
        "calls": 1,
        "same": True,
        "status": "share-canceled",
        "item": {"repository": "stackchain/api", "number": 42, "kind": "issue"},
        "detail": {"repository": "stackchain/api", "number": 42, "kind": "issue"},
        "errorName": "AbortError",
    }


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_search_preview_share_action_uses_canonical_stackchain_url_and_keeps_context():
    html = dashboard_bundle_text()

    assert "share: url => createWorkRoute.share(url, navigator, navigator.clipboard)" in html
    handler = html.split("qs('#share-search-result').addEventListener('click'", 1)[1].split(
        "qs('#claim-search-result')", 1
    )[0]
    assert "canonicalSearchPreviewUrl()" in handler
    assert "searchPreview.share" in handler
    assert "closeSearchPreview" not in handler
    assert "taskOverlayHistory.close" not in handler


def test_assigned_issue_preview_hands_off_to_existing_my_work_sheet():
    html = dashboard_bundle_text()

    assert "claimButton.hidden = !(detail.claimable || detail.assigned_to_me)" in html
    assert "claimButton.textContent = detail.assigned_to_me ? 'Open in My Work' : 'Assign to me'" in html
    assert "openPreviewWorkInMyWork" in html


def test_assigned_pull_preview_hands_off_to_existing_my_work_sheet_without_claiming():
    html = dashboard_bundle_text()

    assert "claimButton.hidden = !(detail.claimable || detail.assigned_to_me)" in html
    assert "async function openPreviewWorkInMyWork(detail)" in html
    handoff = html.split("async function openPreviewWorkInMyWork(detail)", 1)[1].split(
        "function runCommandItem", 1
    )[0]
    assert "candidate.kind === detail.kind" in handoff
    assert "candidate.key === detail.repository + '#' + detail.number" in handoff

    click_handler = html.split(
        "qs('#claim-search-result').addEventListener('click'", 1
    )[1].split("qs('#start-search-result')", 1)[0]
    assert "if (claimed.claimable) await searchPreview.claim(claimed)" in click_handler
    assert "await openPreviewWorkInMyWork(claimed)" in click_handler


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

    assert "startButton.hidden = !(detail.reviewable" in html
    assert "detail.reviewable ? 'Review now'" in html
    handler = html.split(
        "qs('#start-search-result').addEventListener('click'", 1
    )[1].split("qs('#close-whiteboard')", 1)[0]
    assert "detail.kind = 'review'" in handler
    assert "openRoutedWork" in handler
    assert "{ replace:true }" in handler
    assert "searchPreview.claim" not in handler
    assert "fetchReviewJson" not in handler
    assert ".search-preview-actions button, .search-preview-actions a { min-height:44px;" in css


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 "(detail.assigned_to_me ? 'Start in Today' : 'Assign & start')" in html
    assert "const searchAssignAndStart = createSearchStart(detail => searchPreview.claim(detail))" 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_closed_issue_preview_reopens_then_resumes_through_capacity_guard():
    html = dashboard_bundle_text()

    assert "detail.reopenable ? 'Reopen & resume'" in html
    assert "mutate: (detail, action) => fetchReviewJson(" in html
    handler = html.split("qs('#start-search-result').addEventListener('click'", 1)[1].split(
        "qs('#close-whiteboard')", 1
    )[0]
    assert "searchReopenAndStart.run(detail)" in handler
    orchestrator = html.split("function createSearchStart(claim)", 1)[1].split(
        "const searchAssignAndStart", 1
    )[0]
    assert "available: createAndStart.available" in orchestrator
    assert "claim," in orchestrator
    assert "acceptClaimedIssue(confirmed)" in orchestrator
    assert "const searchReopenAndStart = createSearchStart(detail => searchPreview.reopen(detail))" in html


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