"""Data filter functions.

Replaces filters.js:
  - MEMBERLIST_ACTIVE_ONLY: keep only active crew/raumfahrer/passive
  - MEMBERLIST_SELF_ONLY: keep only the requesting user's record
  - runfilter: apply a filter function if configured
"""


def memberlist_active_only(ctx):
    """Filter member list to active members only.

    Replaces MEMBERLIST_ACTIVE_ONLY from filters.js.
    The requesting user is always included regardless of status.
    """
    username = ctx.get('username', '')
    newdata = []

    for row in ctx.get('data', []):
        # Always include self
        if username == row.get('Kurzname'):
            newdata.append(row)
            continue

        status = _realstatus(row)
        if status not in ('crew', 'raumfahrer', 'passiv'):
            continue

        kurzname = row.get('Kurzname', '')
        if not kurzname or kurzname[0] == 'X':
            continue

        newrow = {
            'Kurzname': kurzname,
            'Kennung3': row.get('Kennung3'),
            'Eintritt': row.get('Eintritt'),
            'Kontaktwoher': row.get('Kontaktwoher'),
        }
        if row.get('Nachname'):
            newrow['Nachname'] = row['Nachname']
        if row.get('Vorname'):
            newrow['Vorname'] = row['Vorname']
        if row.get('Austritt'):
            newrow['Austritt'] = row['Austritt']
        newdata.append(newrow)

    ctx['data'] = newdata
    return ctx


def memberlist_self_only(ctx):
    """Filter member list to only the requesting user.

    Replaces MEMBERLIST_SELF_ONLY from filters.js.
    """
    username = ctx.get('username', '')
    newdata = []

    for row in ctx.get('data', []):
        if username == row.get('Kurzname'):
            newdata.append(row)
            break

    ctx['data'] = newdata
    return ctx


def runfilter(ctx):
    """Apply the configured filter, if any.

    Replaces runfilter() from filters.js.
    """
    filt = ctx.get('filter')
    if filt is None:
        return ctx
    return filt(ctx)


# ── Internal helpers ──────────────────────────────────────────────────────────

# We import realstatus lazily to avoid circular imports
_realstatus = None


def _get_realstatus():
    global _realstatus
    if _realstatus is None:
        from .memberdata import realstatus as _rs
        _realstatus = _rs
    return _realstatus


# Override the closure to use the real function
def memberlist_active_only(ctx):
    rs = _get_realstatus()
    username = ctx.get('username', '')
    newdata = []

    for row in ctx.get('data', []):
        if username == row.get('Kurzname'):
            newdata.append(row)
            continue

        status = rs(row)
        if status not in ('crew', 'raumfahrer', 'passiv'):
            continue

        kurzname = row.get('Kurzname', '')
        if not kurzname or kurzname[0] == 'X':
            continue

        newrow = {
            'Kurzname': kurzname,
            'Kennung3': row.get('Kennung3'),
            'Eintritt': row.get('Eintritt'),
            'Kontaktwoher': row.get('Kontaktwoher'),
        }
        if row.get('Nachname'):
            newrow['Nachname'] = row['Nachname']
        if row.get('Vorname'):
            newrow['Vorname'] = row['Vorname']
        if row.get('Austritt'):
            newrow['Austritt'] = row['Austritt']
        newdata.append(newrow)

    ctx['data'] = newdata
    return ctx