from pathlib import Path

import pytest


ROOT = Path(__file__).parents[2]


@pytest.mark.parametrize("viewport", [(320, 568), (390, 844)])
def test_mobile_received_review_feedback_opens_matching_change(viewport):
    playwright = pytest.importorskip("playwright.sync_api")
    html = (ROOT / "frontend" / "index.html").read_text()
    detail = {
        "state": "open",
        "draft": False,
        "mergeable": True,
        "merged": False,
        "ci_state": "success",
        "head_sha": "current-head",
        "reviewers": [{
            "login": "sam",
            "status": "outdated",
            "head_sha": "old-head-123456",
            "blocking": True,
            "summary": "Please handle the narrow empty state before merging.",
            "comments": [{
                "path": "src/a/very/long/mobile/path/review_target.py",
                "body": "Return before parsing when the payload is empty.",
                "line": 12,
            }],
        }],
        "files": [{
            "filename": "src/a/very/long/mobile/path/review_target.py",
            "status": "modified",
            "additions": 2,
            "deletions": 1,
            "diff_available": True,
            "diff_lines": ["@@ -10,2 +10,3 @@", "-parse(payload)", "+if not payload: return", "+parse(payload)"],
        }],
    }

    with playwright.sync_playwright() as runtime:
        try:
            browser = runtime.chromium.launch(headless=True)
        except Exception as error:
            pytest.skip(f"Chromium is not installed: {error}")
        page = browser.new_page(viewport={"width": viewport[0], "height": viewport[1]})
        page.set_content(html, wait_until="domcontentloaded")
        page.add_style_tag(path=ROOT / "frontend" / "dashboard.css")
        page.add_script_tag(path=ROOT / "frontend" / "pull-sheet.js")
        page.evaluate(
            """detail => {
                document.querySelector('#pull-sheet').classList.add('open');
                document.querySelector('#pull-review').open = true;
                createPullSheet.review(detail, null, document);
                document.querySelector('#pull-files').innerHTML = detail.files.map((file, index) =>
                    createPullSheet.renderFile(file, index, false, value => String(value)
                        .replaceAll('&', '&amp;').replaceAll('<', '&lt;').replaceAll('>', '&gt;'))
                ).join('');
            }""",
            detail,
        )

        page.locator(".pull-review-feedback summary").click()
        jump = page.locator('[data-review-feedback-file]')
        jump.click()
        metrics = page.evaluate(
            """() => {
                const jump = document.querySelector('[data-review-feedback-file]');
                const toggle = document.querySelector('.pull-file-toggle');
                const panel = document.getElementById(toggle.getAttribute('aria-controls'));
                return {
                    scrollWidth: document.documentElement.scrollWidth,
                    clientWidth: document.documentElement.clientWidth,
                    jumpHeight: jump.getBoundingClientRect().height,
                    expanded: toggle.getAttribute('aria-expanded'),
                    panelHidden: panel.hidden,
                    focused: document.activeElement === toggle,
                    reviewedHead: document.querySelector('.pull-review-feedback').textContent,
                    updatedReviewVisible: !document.querySelector('#request-updated-pull-review').hidden,
                };
            }"""
        )
        browser.close()

    assert metrics["scrollWidth"] <= metrics["clientWidth"]
    assert metrics["jumpHeight"] >= 44
    assert metrics["expanded"] == "true"
    assert metrics["panelHidden"] is False
    assert metrics["focused"] is True
    assert "Reviewed head old-head" in metrics["reviewedHead"]
    assert metrics["updatedReviewVisible"] is True


@pytest.mark.parametrize("viewport", [(320, 568), (390, 844)])
def test_mobile_pull_review_retries_inline_feedback_without_losing_core_review(viewport):
    playwright = pytest.importorskip("playwright.sync_api")
    html = (ROOT / "frontend" / "index.html").read_text()
    detail = {
        "state": "open", "draft": False, "mergeable": True, "merged": False,
        "ci_state": "success", "head_sha": "abc1234",
        "reviewers": [{
            "login": "sam", "review_id": 8, "status": "changes_requested",
            "head_sha": "abc1234", "blocking": True,
            "summary": "Please handle the empty state.",
        }],
        "files": [],
    }

    with playwright.sync_playwright() as runtime:
        try:
            browser = runtime.chromium.launch(headless=True)
        except Exception as error:
            pytest.skip(f"Chromium is not installed: {error}")
        page = browser.new_page(viewport={"width": viewport[0], "height": viewport[1]})
        page.set_content(html, wait_until="domcontentloaded")
        page.add_style_tag(path=ROOT / "frontend" / "dashboard.css")
        page.add_script_tag(path=ROOT / "frontend" / "pull-sheet.js")
        page.evaluate(
            """detail => {
                window.lazyFeedbackDetail = detail;
                window.lazyFeedbackItem = {repository:'stackchain/api', number:7, key:'stackchain/api#7'};
                let attempts = 0;
                const controller = createPullSheet({
                    storage:null,
                    fetchJson:() => {
                        attempts += 1;
                        if (attempts === 1) return Promise.reject(new Error('feedback unavailable'));
                        return Promise.resolve({
                            review_id:8, head_sha:'abc1234', reviewed_head_sha:'abc1234',
                            comments:[{id:99, path:'src/api.py', body:'Return before parsing.', line:12}],
                        });
                    },
                });
                createPullSheet.bindFeedbackControls(
                    document, controller, () => window.lazyFeedbackItem,
                    () => window.lazyFeedbackDetail, () => 'timmy'
                );
                document.querySelector('#pull-sheet').classList.add('open');
                document.querySelector('#pull-review').open = true;
                const eligibility = createPullSheet.review(detail, null, document);
                document.querySelector('#pull-merge-state').textContent = eligibility.reason;
            }""",
            detail,
        )

        page.locator(".pull-review-feedback summary").click()
        load = page.get_by_role("button", name="Load inline feedback")
        load.click()
        retry = page.get_by_role("button", name="Retry feedback")
        retry.wait_for()
        retry.click()
        page.get_by_text("Return before parsing.").wait_for()
        metrics = page.evaluate(
            """() => {
                const details = document.querySelector('.pull-review-feedback');
                const address = document.querySelector('[data-address-review-feedback]');
                return {
                    scrollWidth: document.documentElement.scrollWidth,
                    clientWidth: document.documentElement.clientWidth,
                    blocker: document.querySelector('#pull-merge-state').textContent,
                    feedback: details.textContent,
                    addressHeight: address.getBoundingClientRect().height,
                };
            }"""
        )
        browser.close()

    assert metrics["scrollWidth"] <= metrics["clientWidth"]
    assert "requested changes" in metrics["blocker"]
    assert "Return before parsing." in metrics["feedback"]
    assert metrics["addressHeight"] >= 44