import html

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

from app.auth import require_user
from app.db.apps import get_deployment, get_deployments
from app.templates.layout import page

router = APIRouter()


def render_status_pill(status: str | None) -> str:
    status_value = status or ""
    normalized = status_value.strip().lower()

    if normalized in {"ok", "success", "succeeded", "done", "deployed", "completed"}:
        class_name = "pill pill-success"
    elif normalized in {"running", "pending", "queued", "in_progress", "starting"}:
        class_name = "pill pill-warning"
    elif normalized in {"failed", "failure", "error", "cancelled", "canceled"}:
        class_name = "pill pill-danger"
    else:
        class_name = "pill pill-muted"

    return f'<span class="{class_name}">{html.escape(status_value)}</span>'


@router.get("/deployments", response_class=HTMLResponse)
async def deployments_page(request: Request, user=Depends(require_user)):
    deployments = get_deployments()

    rows = ""
    for deployment in deployments:
        deployment_id = html.escape(str(deployment.get("id", "")))
        app_id = html.escape(deployment.get("app_id", "") or "")
        kind = html.escape(deployment.get("kind", "") or "")
        status = render_status_pill(deployment.get("status"))
        started_at = html.escape(deployment.get("started_at", "") or "")
        finished_at = html.escape(deployment.get("finished_at", "") or "")
        returncode = deployment.get("returncode")
        returncode_label = "" if returncode is None else html.escape(str(returncode))

        rows += f"""
        <tr>
            <td>
                <strong>#{deployment_id}</strong><br>
                <span class="muted">{started_at}</span>
            </td>
            <td>{app_id}</td>
            <td>{kind}</td>
            <td>{status}</td>
            <td>{returncode_label}</td>
            <td>{finished_at}</td>
            <td class="actions-cell">
                <a class="btn" href="/portal/deployments/{deployment_id}">Detail</a>
            </td>
        </tr>
        """

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

    return page(
        "Nasazení",
        f"""
        <div class="card">
            <h2>Historie nasazení</h2>
            <p class="muted">Přehled posledních běhů nasazení a jejich výsledků.</p>
            <a class="btn" href="/portal">&larr; Zpět na portál</a>
        </div>

        <div class="card">
            <h2>Nasazení</h2>
            <table>
                <tr>
                    <th>ID</th>
                    <th>Aplikace</th>
                    <th>Typ</th>
                    <th>Status</th>
                    <th>Kód</th>
                    <th>Dokončeno</th>
                    <th>Akce</th>
                </tr>
                {rows}
            </table>
        </div>
        """,
        user=user,
    )


@router.get("/deployments/{deployment_id}", response_class=HTMLResponse)
async def deployment_detail_page(
    deployment_id: int,
    request: Request,
    user=Depends(require_user),
):
    deployment = get_deployment(deployment_id)

    if not deployment:
        raise HTTPException(status_code=404, detail="Deployment not found")

    title = f"Nasazení #{html.escape(str(deployment.get('id', deployment_id)))}"
    app_id = html.escape(deployment.get("app_id", "") or "")
    kind = html.escape(deployment.get("kind", "") or "")
    status = render_status_pill(deployment.get("status"))
    started_at = html.escape(deployment.get("started_at", "") or "")
    finished_at = html.escape(deployment.get("finished_at", "") or "")
    returncode = deployment.get("returncode")
    returncode_label = "" if returncode is None else html.escape(str(returncode))
    stdout = html.escape(deployment.get("stdout", "") or "")
    stderr = html.escape(deployment.get("stderr", "") or "")

    return page(
        title,
        f"""
        <div class="card">
            <h2>{title}</h2>
            <p class="muted">Detail běhu nasazení včetně výstupu procesu.</p>
            <p>
                <a class="btn" href="/portal/deployments">&larr; Zpět na nasazení</a>
                <a class="btn btn-secondary" href="/portal">Zpět na portál</a>
            </p>
        </div>

        <div class="card">
            <h2>Souhrn</h2>
            <table>
                <tr><th>Aplikace</th><td>{app_id}</td></tr>
                <tr><th>Typ</th><td>{kind}</td></tr>
                <tr><th>Status</th><td>{status}</td></tr>
                <tr><th>Návratový kód</th><td>{returncode_label}</td></tr>
                <tr><th>Spuštěno</th><td>{started_at}</td></tr>
                <tr><th>Dokončeno</th><td>{finished_at}</td></tr>
            </table>
        </div>

        <div class="card">
            <h2>Výstup</h2>
            <pre>{stdout}</pre>
            <h2>Chyba</h2>
            <pre>{stderr}</pre>
        </div>
        """,
        user=user,
    )