"""queries/documenti.py — sessione_documenti con join sessione"""

from .db import query, e, dt


_STATUS_BADGE = {
    'trovato':  '<span class="badge doc-trovato">trovato</span>',
    'caricato': '<span class="badge doc-caricato">caricato</span>',
    'errore':   '<span class="badge doc-errore">errore</span>',
    'warning':  '<span class="badge doc-warning">warning</span>',
}


def get_documenti(db_path: str) -> list:
    sql = """
        SELECT
            sd.sessione_id,
            s.corso,
            s.azienda,
            sd.subfolder,
            sd.doc_type,
            sd.doc_status,
            sd.filename,
            sd.note,
            sd.sp_web_url,
            sd.uploaded_at
        FROM sessione_documenti sd
        LEFT JOIN sessione s ON s.id = sd.sessione_id
        ORDER BY sd.sessione_id, sd.subfolder, sd.filename
    """
    return query(db_path, sql)


def get_stats(db_path: str) -> dict:
    rows = get_documenti(db_path)
    return {
        'doc_trovato':  sum(1 for r in rows if r['doc_status'] == 'trovato'),
        'doc_caricato': sum(1 for r in rows if r['doc_status'] == 'caricato'),
        'doc_errore':   sum(1 for r in rows if r['doc_status'] == 'errore'),
        'doc_sessioni': len({r['sessione_id'] for r in rows}),
    }


def render_page(rows: list) -> str:
    if not rows:
        return '<p class="empty-msg">Nessun documento registrato.</p>'

    # Group by sessione_id
    sessions: dict = {}
    order: list = []
    for r in rows:
        sid = r['sessione_id']
        if sid not in sessions:
            sessions[sid] = {'corso': r['corso'], 'azienda': r['azienda'], 'docs': []}
            order.append(sid)
        sessions[sid]['docs'].append(r)

    html_parts = []
    for sid in order:
        s    = sessions[sid]
        docs = s['docs']
        n_trovato  = sum(1 for d in docs if d['doc_status'] == 'trovato')
        n_caricato = sum(1 for d in docs if d['doc_status'] == 'caricato')
        n_errore   = sum(1 for d in docs if d['doc_status'] == 'errore')
        n_warning  = sum(1 for d in docs if d['doc_status'] == 'warning')

        counts_html = (
            (f'<span class="cnt cnt-caricato">{n_caricato} caricati</span>' if n_caricato else '')
            + (f'<span class="cnt cnt-trovato">{n_trovato} trovati</span>' if n_trovato else '')
            + (f'<span class="cnt cnt-warning">{n_warning} warning</span>' if n_warning else '')
            + (f'<span class="cnt cnt-errore">{n_errore} errori</span>' if n_errore else '')
        )

        tbody_rows = ''
        for d in docs:
            status     = d['doc_status'] or ''
            badge_html = _STATUS_BADGE.get(status, f'<span class="badge">{e(status)}</span>')
            if d['sp_web_url']:
                sp_cell = f'<a href="{e(d["sp_web_url"])}" target="_blank" rel="noopener" class="sp-link" title="Apri su SharePoint">🔗</a>'
            else:
                sp_cell = '<span class="sp-missing" title="Non caricato su SharePoint">❌</span>'
            tbody_rows += (
                f'<tr class="doc-row doc-{e(status)}"'
                f' data-filename="{e(d["filename"] or "")}"'
                f' data-doctype="{e(d["doc_type"] or "")}"'
                f' data-subfolder="{e(d["subfolder"] or "")}"'
                f' data-status="{e(status)}"'
                f' data-note="{e(d["note"] or "")}"'
                f' data-uploaded="{e(dt(d["uploaded_at"]) if status == "caricato" else "")}">'
                f'<td class="col-filename" title="{e(d["filename"] or "")}">{"<span style=\'color:#f97316;\'>" + e(d["filename"]) + "</span>" if d["filename"] and d["filename"].startswith("[") and d["filename"].endswith("]") else e(d["filename"])}</td>'
                f'<td class="col-doctype">{e(d["doc_type"])}</td>'
                f'<td class="col-subfolder">{e(d["subfolder"])}</td>'
                f'<td class="col-status">{badge_html}</td>'
                f'<td class="col-sp">{sp_cell}</td>'
                f'<td class="col-note">{e(d["note"])}</td>'
                f'<td class="col-uploaded">{dt(d["uploaded_at"]) if status == "caricato" else "-"}</td>'
                f'</tr>'
            )

        subtable = (
            '<table class="doc-subtable">'
            '<thead><tr>'
            '<th>File</th><th>Tipo</th><th>Cartella</th>'
            '<th>Stato</th><th>SP</th><th>Note</th><th>Caricato</th>'
            '</tr></thead>'
            f'<tbody>{tbody_rows}</tbody>'
            '</table>'
        )

        open_attr = ' open' if (n_errore > 0 or n_warning > 0) else ''
        html_parts.append(
            f'<details class="sess-block"{open_attr}'
            f' data-sessione="{e(sid)}"'
            f' data-corso="{e(s["corso"])}"'
            f' data-azienda="{e(s["azienda"])}">'
            f'<summary class="sess-summary">'
            f'<span class="sess-id">#{e(sid)}</span>'
            f'<span class="sess-corso">{e(s["corso"])}</span>'
            f'<span class="sess-azienda">{e(s["azienda"])}</span>'
            f'<span class="sess-counts">{counts_html}</span>'
            f'</summary>'
            f'<div class="sess-docs">{subtable}</div>'
            f'</details>'
        )

    return '\n'.join(html_parts)