"""
Vereins-Mandanten: Mitgliedschaften, aktiver Vereinskontext, einfache Berechtigungen.

Siehe .claude/docs/technical/MULTI_TENANCY_RBAC_ARCHITECTURE.md
"""
from typing import Any, Dict, List, Optional, Set

from fastapi import HTTPException

def is_platform_admin(role: Optional[str]) -> bool:
    return (role or "").lower() in ("admin", "superadmin")


def club_ids_for_profile(cur, profile_id: int) -> Set[int]:
    cur.execute(
        """
        SELECT club_id FROM club_members
        WHERE profile_id = %s AND status = 'active'
        """,
        (profile_id,),
    )
    return {r["club_id"] for r in cur.fetchall()}


def assert_club_member(cur, profile_id: int, club_id: int) -> None:
    cur.execute(
        """
        SELECT 1 FROM club_members
        WHERE profile_id = %s AND club_id = %s AND status = 'active'
        LIMIT 1
        """,
        (profile_id, club_id),
    )
    if not cur.fetchone():
        raise HTTPException(status_code=403, detail="Keine Mitgliedschaft in diesem Verein")


def has_club_role(cur, profile_id: int, club_id: int, *role_codes: str) -> bool:
    if not role_codes:
        return False
    cur.execute(
        """
        SELECT 1
        FROM club_members cm
        INNER JOIN club_member_roles r ON r.club_member_id = cm.id
        WHERE cm.profile_id = %s AND cm.club_id = %s AND cm.status = 'active'
          AND r.role_code IN ({ph})
        LIMIT 1
        """.format(ph=",".join(["%s"] * len(role_codes))),
        (profile_id, club_id, *role_codes),
    )
    return cur.fetchone() is not None


def can_manage_club_org(cur, profile_id: int, club_id: int, global_role: Optional[str]) -> bool:
    """Sparten/Gruppen/Struktur: Vereinsadmin oder Plattform-Admin."""
    if is_platform_admin(global_role):
        return True
    return has_club_role(cur, profile_id, club_id, "club_admin")


def can_plan_in_club(cur, profile_id: int, club_id: int, global_role: Optional[str]) -> bool:
    """Trainingsgruppen anlegen / planen: Admin-Rollen im Verein oder Plattform."""
    if is_platform_admin(global_role):
        return True
    return has_club_role(
        cur, profile_id, club_id, "club_admin", "trainer", "content_editor", "division_lead"
    )


def memberships_with_roles(cur, profile_id: int, active_only: bool = True) -> List[Dict[str, Any]]:
    status_filter = "AND cm.status = 'active'" if active_only else ""
    cur.execute(
        f"""
        SELECT c.id, c.name, c.abbreviation, c.status,
               cm.status AS membership_status,
               COALESCE(
                   ARRAY_AGG(DISTINCT r.role_code) FILTER (WHERE r.role_code IS NOT NULL),
                   ARRAY[]::varchar[]
               ) AS roles
        FROM club_members cm
        INNER JOIN clubs c ON c.id = cm.club_id
        LEFT JOIN club_member_roles r ON r.club_member_id = cm.id
        WHERE cm.profile_id = %s {status_filter}
        GROUP BY c.id, c.name, c.abbreviation, c.status, cm.status
        ORDER BY c.name
        """,
        (profile_id,),
    )
    out: List[Dict[str, Any]] = []
    for row in cur.fetchall():
        d = dict(row)
        roles = d.get("roles") or []
        if hasattr(roles, "tolist"):
            roles = roles.tolist()
        d["roles"] = list(roles)
        out.append(d)
    return out


_GOVERNANCE_VISIBILITY = frozenset({"private", "club", "official"})


def assert_valid_governance_visibility(
    cur,
    profile_id: int,
    role: Optional[str],
    visibility: str,
    club_id: Optional[int],
) -> None:
    """Pflicht club_id bei visibility=club; Mitgliedschaft außer Plattform-Admin; official nur Plattform-Admin."""
    if visibility not in _GOVERNANCE_VISIBILITY:
        raise HTTPException(status_code=400, detail="Ungültige visibility")
    if visibility == "official" and not is_platform_admin(role):
        raise HTTPException(
            status_code=403,
            detail="Nur Plattform-Admins dürfen offizielle Inhalte setzen",
        )
    if visibility == "club":
        if club_id is None:
            raise HTTPException(status_code=400, detail="club_id ist bei visibility=club erforderlich")
        if is_platform_admin(role):
            cur.execute("SELECT 1 FROM clubs WHERE id = %s", (club_id,))
            if not cur.fetchone():
                raise HTTPException(status_code=400, detail="Verein nicht gefunden")
        else:
            assert_club_member(cur, profile_id, club_id)


def library_content_visible_to_profile(
    cur,
    profile_id: int,
    visibility: str,
    content_club_id: Optional[int],
    created_by: Optional[int],
    global_role: Optional[str],
) -> bool:
    """Leserechte wie Übungen für alle Objekte mit visibility/club_id/created_by (Bibliothek & Co.)."""
    return exercise_visible_to_profile(
        cur, profile_id, visibility, content_club_id, created_by, global_role
    )


def exercise_visible_to_profile(
    cur,
    profile_id: int,
    visibility: str,
    exercise_club_id: Optional[int],
    created_by: Optional[int],
    global_role: Optional[str],
) -> bool:
    if is_platform_admin(global_role):
        return True
    if visibility == "official":
        return True
    if created_by is not None and created_by == profile_id:
        return True
    if visibility == "private":
        return False
    if visibility == "club":
        if exercise_club_id is None:
            return False
        cur.execute(
            """
            SELECT 1 FROM club_members
            WHERE profile_id = %s AND club_id = %s AND status = 'active'
            LIMIT 1
            """,
            (profile_id, exercise_club_id),
        )
        return cur.fetchone() is not None
    return False