"""The Docker page leads with what needs attention, ranked the way the MCP
tools rank it, and marks a container whose report is old as stale (#5123)."""
import re
from datetime import datetime, timedelta, timezone
from types import SimpleNamespace as NS


from plugins.docker import service as svc
from plugins.docker.routes import _is_stale
from tests._templates import render_plugin_template
from tests.test_style_tokens import hex_colours

NOW = datetime.now(timezone.utc)


def _c(name, **kw):
    base = dict(name=name, host_id="h1", image="nginx:1", status="running", health=None, exit_code=None,
                oom_killed=False, restart_count=0, cpu_pct=5.0, mem_pct=10.0, compose_project=None,
                service_name=None, ports_json=None, started_at=NOW - timedelta(hours=2),
                scraped_at=NOW - timedelta(seconds=20))
    base.update(kw)
    return NS(**base)


def test_needs_attention_ranks_the_worst_problem_first():
    ranked = [{"container": _c(n), "problems": p, "since": None, "replaced": False} for n, p in [
        ("fine", []), ("oom", ["oom_killed"]), ("sick", ["unhealthy"]),
        ("loop", ["crash_looping"]), ("exit", ["exited_nonzero"]), ("bounce", ["restarting", "crash_looping"])]]
    assert [r["container"].name for r in svc.needs_attention(ranked)] == ["bounce", "loop", "sick", "oom", "exit"]


def test_stale_is_older_than_the_agents_window():
    assert not _is_stale(_c("a"), NOW, 180)
    assert _is_stale(_c("a", scraped_at=NOW - timedelta(minutes=10)), NOW, 180)
    assert _is_stale(_c("a", scraped_at=None), NOW, 180)
    # A fresh row on a host whose Docker stopped answering is stale too (#5152).
    assert _is_stale(_c("a"), NOW, 180, {"h1": object()})
    assert not _is_stale(_c("a"), NOW, 180, {"h2": object()})
    assert svc.stale_after_seconds({"PLUGINS": {"host_agent": {"stale_after_seconds": 60}}}) == 60
    assert svc.stale_after_seconds({}) == 180


async def test_a_crash_loop_comes_first_and_a_stale_row_says_so(app):
    loop = _c("api", status="restarting", exit_code=1, restart_count=7)
    old = _c("cache", scraped_at=NOW - timedelta(minutes=30), cpu_pct=95.0)
    attention = [{"container": loop, "label": "api", "problems": ["restarting", "crash_looping"], "replaced": False,
                  "since": datetime.now(timezone.utc) - timedelta(minutes=8), "stale": False}]
    groups = [{"host": None, "host_id": "h1", "host_name": "nas", "running": 1, "stopped": 1, "grouped": False,
               "subgroups": [{"label": None, "containers": [
                   {"container": loop, "ports": [], "uptime": None, "stale": False,
                    "usage": svc.usage(loop, 1, None), "exit_failed": True},
                   {"container": old, "ports": [], "uptime": "2h", "stale": True,
                    "usage": svc.usage(old, 1, None), "exit_failed": False}]}]}]
    async with app.test_request_context("/plugins/docker/rows"):
        page = await render_plugin_template(
            app, "docker", "docker/rows.html", attention=attention, says=svc.PROBLEM_SAYS, severity=svc.PROBLEM_SEVERITY,
            unhealthy=0, restarting=1, stale=1, host_groups=groups, swarm_services=[],
            running=1, stopped=1, docker_hosts=1, failures=[], failing_services=[])
    page = re.sub(r">\s+<", "><", " ".join(page.split()))

    card = page[page.index("Needs attention"):page.index("</section>")]
    assert '<span class="badge badge-crit">Restarting</span>' in card
    assert 'href="/plugins/docker/container/h1/api" title="api">api</a>' in card
    assert "is restarting and keeps dying · exit 1 · since <time" in card and ">8m ago</time>" in card
    assert "cache" not in card
    assert page.index("Needs attention") < page.index("<table")

    assert '<span class="stat-tile-label">Restarting</span><span class="stat-tile-value">1</span>' in page
    assert '<span class="stat-tile-label">Stale</span><span class="stat-tile-value">1</span>' in page
    assert 'class="badge badge-warn" title="Last report' in page          # the stale row
    # CPU in cores, toned by its share of the host's CPUs through Settings → Thresholds.
    assert ('<span class="tone-crit" title="Docker counts CPU per core: 95% of one core, '
            '95.0% of this host\'s 1 core">0.95 cores</span>') in page
    assert "history" not in page.lower() and "<svg" not in page            # no sparklines on the overview
    assert not hex_colours(page), hex_colours(page)


async def test_a_healthy_board_has_no_attention_card(app):
    async with app.test_request_context("/plugins/docker/rows"):
        page = await render_plugin_template(
            app, "docker", "docker/rows.html", attention=[], says=svc.PROBLEM_SAYS, severity=svc.PROBLEM_SEVERITY,
            unhealthy=0, restarting=0, stale=0, host_groups=[], swarm_services=[], running=0, stopped=0,
            docker_hosts=0, failures=[], failing_services=[])
    assert "Needs attention</h2>" not in page and "No containers reported yet" in page


async def test_a_host_whose_docker_stopped_answering_says_so(app):
    now = datetime.now(timezone.utc)   # not the module's NOW: |ago reads the clock
    down = [{"host_id": "h1", "host_name": "nas", "status": "unavailable",
             "detail": "no Docker socket at /var/run/docker.sock", "since": now - timedelta(minutes=5)},
            {"host_id": "h2", "host_name": "web-1", "status": "error",
             "detail": "permission denied on /var/run/docker.sock", "since": now - timedelta(minutes=1)}]
    async with app.test_request_context("/plugins/docker/rows"):
        page = await render_plugin_template(
            app, "docker", "docker/rows.html", docker_down=down, attention=[], says=svc.PROBLEM_SAYS,
            severity=svc.PROBLEM_SEVERITY, unhealthy=0, restarting=0, stale=0, host_groups=[],
            swarm_services=[], running=0, stopped=0, docker_hosts=0, failures=[], failing_services=[])
    page = re.sub(r">\s+<", "><", " ".join(page.split()))
    card = page[page.index("Docker not answering"):page.index("</section>")]
    assert '<span class="badge badge-warn">No Docker</span><a href="/hosts/h1">nas</a>' in card
    assert "no Docker socket at /var/run/docker.sock · since <time" in card and ">5m " in card
    assert '<span class="badge badge-crit">Error</span><a href="/hosts/h2">web-1</a>' in card


async def test_no_card_while_every_docker_answers(app):
    async with app.test_request_context("/plugins/docker/rows"):
        page = await render_plugin_template(
            app, "docker", "docker/rows.html", docker_down=[], attention=[], says=svc.PROBLEM_SAYS,
            severity=svc.PROBLEM_SEVERITY, unhealthy=0, restarting=0, stale=0, host_groups=[],
            swarm_services=[], running=0, stopped=0, docker_hosts=0, failures=[], failing_services=[])
    assert "Docker not answering" not in page


async def test_a_failing_service_leads_and_the_failures_are_listed(app):
    now = datetime.now(timezone.utc)
    sick = {"name": "codex_db", "mode": "replicated", "running": 0, "desired": 1, "state": "down",
            "crash_looping": True, "failures_1h": 7, "failures_24h": 9, "tasks_known": True,
            "trouble_since": now - timedelta(minutes=20), "replicas": [], "previous_tasks": 7,
            "last_error": {"state": "failed", "error": "task: non-zero exit (1)", "exit_code": 1,
                           "node": "nas", "at": None, "age_s": 120}}
    failures = [{"kind": "service", "name": "codex_db", "host_id": None, "host": "nas", "count": 9,
                 "at": now - timedelta(minutes=2), "detail": "task: non-zero exit (1)"},
                {"kind": "container", "name": "backup", "host_id": "h1", "host": "nas", "count": 1,
                 "at": now - timedelta(hours=3), "detail": "exit 2"}]
    async with app.test_request_context("/plugins/docker/rows"):
        page = await render_plugin_template(
            app, "docker", "docker/rows.html", docker_down=[], attention=[], says=svc.PROBLEM_SAYS,
            severity=svc.PROBLEM_SEVERITY, unhealthy=0, restarting=0, stale=0, host_groups=[],
            swarm_services=[sick], services_healthy=0, failing_services=[sick], failures=failures,
            running=0, stopped=0, docker_hosts=1)
    page = re.sub(r">\s+<", "><", " ".join(page.split()))
    card = page[page.index("Needs attention"):page.index("</section>")]
    assert '<span class="badge badge-crit">Crash-looping</span><a href="/plugins/docker/swarm">codex_db</a>' in card
    assert "0 of 1 running · 7 tasks failed in the last hour · last task failed: task: non-zero exit (1)" in card
    assert "since <time" in card
    assert '<span class="stat-tile-label">Swarm services</span><span class="stat-tile-value">0/1</span>' in page
    listed = page[page.index('id="failures"'):]
    listed = listed[:listed.index("</section>")]
    assert listed.index("codex_db") < listed.index("backup")              # newest first
    assert "9 failures · last: task: non-zero exit (1) · nas" in listed
    assert 'href="/plugins/docker/container/h1/backup">backup</a>' in listed


async def test_the_disk_page_explains_its_terms_and_names_untagged_images(app):
    """#5212: no unexplained jargon, no "<none>" rows, and a capped list says so."""
    summary = {"images_total": 312, "images_active": 40, "images_size": "40 GiB",
               "images_reclaimable": "12 GiB", "layers_size": "30 GiB", "containers_count": 9,
               "containers_size": "1.2 GiB", "volumes_count": 4, "volumes_size": "3 GiB",
               "build_cache_size": "2 GiB"}
    images = [{"repo_tag": "nginx:1", "image_id": "aaaaaaaaaaaa", "size": "180 MiB", "shared": "70 MiB",
               "containers": 2, "reclaimable": False},
              {"repo_tag": None, "image_id": "bbbbbbbbbbbb", "size": "700 MiB", "shared": "0 B",
               "containers": 0, "reclaimable": True}]
    group = {"host_id": "h1", "host_name": "nas", "as_of": NOW - timedelta(minutes=2), "summary": summary,
             "stopped": 1, "images": images, "has_target": True, "images_capped": True}
    async with app.test_request_context("/plugins/docker/disk"):
        page = await render_plugin_template(app, "docker", "docker/disk.html",
                                            host_groups=[group], ansible_available=True)
    assert "untagged</span> bbbbbbbbbbbb" in page and "&lt;none&gt;" not in page
    assert "The 2 largest of 312 images" in page and "as of <time" in page
    assert "Writable layers" not in page and "Container files" in page
    assert "held by images no container uses" in page and "safe to clear" in page
    assert "Shared with other images" in page and "2 containers" in page and ">nothing<" in page
    assert "dangling" not in page


def _widget_svc(name, state="healthy", running=1, desired=1, hosts=("VDNT-Docker02",), **kw):
    base = dict(name=name, state=state, running=running, desired=desired, crash_looping=False,
                failures_1h=0, last_error=None, trouble_since=None,
                replicas=[{"host": h, "ghost": False} for h in hosts])
    base.update(kw)
    return base


async def _services_widget(app, **ctx):
    base = dict(bad_services=[], bad_containers=[], healthy=[], healthy_more=0, services_total=0,
                services_healthy=0, running_count=0, failures=[], host_name={"h1": "VDNT-Docker02"},
                total_count=1, widget_id="1")
    base.update(ctx)
    async with app.test_request_context("/plugins/docker/widget"):
        return await render_plugin_template(app, "docker", "docker/widget.html", **base)


async def test_the_services_widget_lists_what_is_wrong_then_packs_the_healthy(app):
    """#5252: a verdict, the troubled service with why and since when, the
    failures by name, then healthy services one line each in a packed grid."""
    bad = _widget_svc("codex_db", state="down", running=0, crash_looping=True, failures_1h=7,
               trouble_since=datetime.now(timezone.utc) - timedelta(minutes=9))
    page = await _services_widget(
        app, bad_services=[bad], services_total=3, services_healthy=2, running_count=4,
        failures=[{"name": "codex_db", "host": "VDNT-Docker03", "count": 7, "at": NOW - timedelta(minutes=1),
                   "detail": "exit 1"}],
        healthy=[{"kind": "service", "s": _widget_svc("curator_app")},
                 {"kind": "service", "s": _widget_svc("web", running=2, desired=2, hosts=("a", "b", "a"))},
                 {"kind": "container", "c": _c("portainer_agent")}],
        healthy_more=12)
    assert "2/3 services healthy" in page and "4 other containers running" in page and "1 failed in 24h" in page
    assert page.index("Needs a look") < page.index("Failed in the last 24h") < page.index("Healthy")
    assert "crash-looping: 7 failed in the last hour" in page and "9m ago" in page
    assert "7 times, last" in page and "exit 1" in page
    assert 'class="w-grid"' in page and " · a, b</span>" in page and ">2/2<" in page
    assert "+12 more healthy" in page
    assert not hex_colours(page), hex_colours(page)


async def test_the_services_widget_says_when_all_is_well(app):
    page = await _services_widget(app, services_total=2, services_healthy=2, running_count=1,
                                  healthy=[{"kind": "service", "s": _widget_svc("a")}])
    assert "2/2 services healthy" in page and "nothing failed in 24h" in page and "tone-ok" in page
    assert "Needs a look" not in page and "Failed in the last 24h" not in page


def test_a_container_reads_by_its_service_or_ci_job():
    """#5253: no task id, no slot number, no forty-character CI container name."""
    assert svc.display_name(_c("scribe_app.1.x7q", service_name="scribe_app")) == "scribe_app"
    ci = "GITEA-ACTIONS-TASK-32792-WORKFLOW-Desktop-Tauri-JOB-verify-Web-d718b95dad0b02ad3cc1"
    assert svc.display_name(_c(ci)) == "CI: Desktop-Tauri · verify-Web"
    assert svc.display_name(_c("portainer_agent")) == "portainer_agent"


def _bars(values, floor):
    return svc.scaled_bars(values, floor)


async def test_busiest_containers_show_the_number_beside_its_recent_bars(app):
    """#5253, #5214: every figure has its unit; the bars beside it are the last
    hours, scaled to the row's own peak; the widget names the busiest."""
    rows = [
        {"c": _c("GITEA-ACTIONS-TASK-1-WORKFLOW-Android-JOB-build-0123456789abcdef0"),
         "label": "CI: Android · build", "host_name": "VDNT-Docker03",
         "usage": {"cores": 1.62, "cpus": 8, "cpu_share": 20.25, "mem_bytes": 820 * 2**20,
                   "mem_pct": 5.0, "mem_of": "the host's memory", "mem_limit": None},
         "cpu_bars": _bars([None, 0.8, 3.2, 1.6], 1.0), "mem_bars": _bars([None] * 4, 2**30)},
        {"c": _c("tdarr"), "label": "tdarr", "host_name": "VDNT-Docker03",
         "usage": {"cores": 0.25, "cpus": 8, "cpu_share": 3.1, "mem_bytes": None,
                   "mem_pct": None, "mem_of": None, "mem_limit": None},
         "cpu_bars": _bars([0.25] * 4, 1.0), "mem_bars": _bars([None] * 4, 2**30)},
    ]
    async with app.test_request_context("/plugins/docker/widget/resources"):
        page = await render_plugin_template(app, "docker", "docker/widget_resources.html",
                                            rows=rows, minutes=5, hours=6, cpu_floor=1.0,
                                            mem_floor=2**30, widget_id="1")
    assert "Busiest: <strong>CI: Android · build</strong> on VDNT-Docker03" in page and "1.6 of 8 cores" in page
    assert ">1.6 cores<" in page and ">0.25 cores<" in page and ">820.0 MiB<" in page and ">—<" in page
    # Android peaks at 3.2 cores, so 1.6 is half height; tdarr's 0.25 sits under the 1-core floor.
    assert 'class="gap"' in page and "height:50.0%" in page and "height:25.0%" in page
    assert "Peak 3.2 cores in the last 6h; bars reach the top at 3.2 cores" in page
    assert "Peak 0.25 cores in the last 6h; bars reach the top at 1.0 cores" in page
    assert "No samples in the last 6h" in page
    assert len(re.findall(r"<th[ >]", page)) == 4
    assert ">CI: Android · build<" in page        # the long CI name only as the hover title
    assert not hex_colours(page), hex_colours(page)


def test_bars_reach_the_peak_but_never_below_the_floor():
    """#5214: a 0.05 → 0.10 wobble stays near the floor; a 1.5 → 3 spike fills."""
    idle = svc.scaled_bars([0.05, 0.10, None], 1.0)
    assert idle == {"bars": [5.0, 10.0, None], "peak": 0.10, "roof": 1.0}
    busy = svc.scaled_bars([1.5, 3.0], 1.0)
    assert busy["bars"] == [50.0, 100.0] and busy["roof"] == 3.0
    assert svc.scaled_bars([None, None], 1.0) == {"bars": [None, None], "peak": None, "roof": 1.0}


def test_bar_slots_end_at_the_bucket_now_falls_in():
    now = datetime(2026, 10, 7, 12, 7, 30, tzinfo=timezone.utc)
    slots, width = svc.bar_slots(now, 6)
    assert width == 900 and len(slots) == 24
    assert slots[-1] == datetime(2026, 10, 7, 12, 0, tzinfo=timezone.utc)
    assert slots[0] == datetime(2026, 10, 7, 6, 15, tzinfo=timezone.utc)