import html
from urllib.parse import quote

from fastapi import APIRouter, Depends, Request
from fastapi.responses import HTMLResponse

from app.auth import require_user
from app.db.audit import log_audit_event
from app.db.operations import (
    get_operations_summary,
    get_recent_audit_events,
    get_recent_deployments,
    get_recent_jobs,
)
from app.routes.deployments import render_status_pill
from app.routes.jobs import render_job_status
from app.templates.layout import page

router = APIRouter()


def render_recent_jobs(jobs: list[dict]) -> str:
    rows = ""
    for job in jobs:
        job_id = html.escape(str(job.get("id", "")))
        job_type = html.escape(job.get("type", "") or "")
        target_type = html.escape(job.get("target_type", "") or "")
        target_id = html.escape(job.get("target_id", "") or "")
        source = html.escape(job.get("source", "") or "")
        created_at = html.escape(job.get("created_at", "") or "")

        rows += f"""
        <tr>
            <td><strong><a href="/portal/jobs/{job_id}">#{job_id}</a></strong></td>
            <td>{render_job_status(job.get("status"))}</td>
            <td>{job_type}</td>
            <td>{target_type}: <strong>{target_id}</strong></td>
            <td>{source}</td>
            <td>{created_at}</td>
        </tr>
        """

    if not rows:
        rows = '<tr><td colspan="6">Zatím nejsou evidované žádné joby.</td></tr>'

    return rows


def render_recent_deployments(deployments: list[dict]) -> str:
    rows = ""
    for deployment in deployments:
        deployment_id = html.escape(str(deployment.get("id", "")))
        raw_app_id = deployment.get("app_id", "") or ""
        app_id = html.escape(raw_app_id)
        app_url_id = quote(raw_app_id, safe="")
        kind = html.escape(deployment.get("kind", "") or "")
        started_at = html.escape(deployment.get("started_at", "") or "")
        finished_at = html.escape(deployment.get("finished_at", "") or "")
        source = html.escape(deployment.get("trigger_source", "") or "")

        rows += f"""
        <tr>
            <td><strong><a href="/portal/deployments/{deployment_id}">#{deployment_id}</a></strong></td>
            <td><a href="/portal/apps/{app_url_id}">{app_id}</a></td>
            <td>{kind}</td>
            <td>{render_status_pill(deployment.get("status"))}</td>
            <td>{source}</td>
            <td>{started_at}</td>
            <td>{finished_at}</td>
        </tr>
        """

    if not rows:
        rows = '<tr><td colspan="7">Zatím nejsou evidovaná žádná nasazení.</td></tr>'

    return rows


def render_recent_audit_events(events: list[dict]) -> str:
    rows = ""
    for event in events:
        rows += f"""
        <tr>
            <td>{html.escape(event.get("created_at", "") or "")}</td>
            <td>{html.escape(event.get("username", "") or "")}</td>
            <td><span class="pill pill-muted">{html.escape(event.get("action", "") or "")}</span></td>
            <td>{html.escape(event.get("target_type", "") or "")}</td>
            <td>{html.escape(str(event.get("target_id") or ""))}</td>
            <td>{html.escape(event.get("source", "") or "")}</td>
        </tr>
        """

    if not rows:
        rows = '<tr><td colspan="6">Zatím nejsou evidované žádné auditní události.</td></tr>'

    return rows


@router.get("/operations", response_class=HTMLResponse)
def operations_dashboard(request: Request, user=Depends(require_user)):
    summary = get_operations_summary()
    log_audit_event(
        user,
        action="operations.dashboard.view",
        target_type="operations",
        metadata=summary,
    )
    recent_jobs = get_recent_jobs()
    recent_deployments = get_recent_deployments()
    recent_audit_events = get_recent_audit_events()

    return page(
        "Operations",
        f"""
        <div class="card">
            <h2>Operations Dashboard</h2>
            <p class="muted">Provozní přehled workerů, jobů, deploymentů a auditních událostí.</p>
        </div>

        <div class="stats-grid">
            <div class="stat-card stat-success"><span>Workers Online</span><strong>{summary.get("workers_online") or 0}</strong></div>
            <div class="stat-card stat-warning"><span>Running Jobs</span><strong>{summary.get("running_jobs") or 0}</strong></div>
            <div class="stat-card stat-warning"><span>Queued Jobs</span><strong>{summary.get("queued_jobs") or 0}</strong></div>
            <div class="stat-card stat-danger"><span>Failed Jobs (24h)</span><strong>{summary.get("failed_jobs_24h") or 0}</strong></div>
            <div class="stat-card stat-total"><span>Deployments Today</span><strong>{summary.get("deployments_today") or 0}</strong></div>
            <div class="stat-card stat-total"><span>Active Applications</span><strong>{summary.get("active_applications") or 0}</strong></div>
        </div>

        <div class="card">
            <h2>Recent Jobs</h2>
            <table>
                <tr>
                    <th>ID</th>
                    <th>Status</th>
                    <th>Type</th>
                    <th>Target</th>
                    <th>Source</th>
                    <th>Created At</th>
                </tr>
                {render_recent_jobs(recent_jobs)}
            </table>
        </div>

        <div class="card">
            <h2>Recent Deployments</h2>
            <table>
                <tr>
                    <th>ID</th>
                    <th>Aplikace</th>
                    <th>Typ</th>
                    <th>Status</th>
                    <th>Zdroj</th>
                    <th>Spuštěno</th>
                    <th>Dokončeno</th>
                </tr>
                {render_recent_deployments(recent_deployments)}
            </table>
        </div>

        <div class="card">
            <h2>Recent Audit Events</h2>
            <table>
                <tr>
                    <th>Čas</th>
                    <th>Uživatel</th>
                    <th>Akce</th>
                    <th>Typ cíle</th>
                    <th>Cíl</th>
                    <th>Zdroj</th>
                </tr>
                {render_recent_audit_events(recent_audit_events)}
            </table>
        </div>
        """,
        user=user,
    )