"""
Akte Sync - Cron Poller

Polls the Advoware Watcher Redis Sorted Set every 10 seconds (10 s debounce):

  advoware:pending_aktennummern  – written by Windows Advoware Watcher
                                   { aktennummer → timestamp }

Eligibility (either flag triggers sync):
  syncSchalter  AND aktivierungsstatus in valid list  → Advoware sync
  aiAktivierungsstatus in valid list                  → xAI sync

EspoCRM webhooks emit akte.sync directly (no queue needed).
Failed akte.sync events are retried by Motia automatically.
"""

from motia import FlowContext, cron


config = {
    "name": "Akte Sync - Cron Poller",
    "description": "Poll Redis for pending Aktennummern and emit akte.sync events (10 s debounce)",
    "flows": ["akte-sync"],
    "triggers": [cron("*/10 * * * * *")],
    "enqueues": ["akte.sync"],
}

# Queue 1: written by Windows Advoware Watcher (keyed by Aktennummer)
PENDING_ADVO_KEY    = "advoware:pending_aktennummern"
PROCESSING_ADVO_KEY = "advoware:processing_aktennummern"

DEBOUNCE_SECS = 10
BATCH_SIZE    = 5   # max items to process per cron tick

VALID_ADVOWARE_STATUSES = frozenset({'import', 'new', 'active'})
VALID_AI_STATUSES       = frozenset({'new', 'active'})


async def handler(input_data: None, ctx: FlowContext) -> None:
    import time
    from services.redis_client import get_redis_client
    from services.espocrm import EspoCRMAPI

    ctx.logger.info("=" * 60)
    ctx.logger.info("⏰ AKTE CRON POLLER")

    redis_client = get_redis_client(strict=False)
    if not redis_client:
        ctx.logger.error("❌ Redis unavailable")
        ctx.logger.info("=" * 60)
        return

    espocrm = EspoCRMAPI(ctx)
    cutoff = time.time() - DEBOUNCE_SECS

    advo_pending = redis_client.zcard(PENDING_ADVO_KEY)
    ctx.logger.info(f"   Pending (aktennr) : {advo_pending}")

    processed_count = 0

    # ── Queue: Advoware Watcher (by Aktennummer) ───────────────────────
    advo_entries = redis_client.zrangebyscore(PENDING_ADVO_KEY, min=0, max=cutoff, start=0, num=BATCH_SIZE)
    for raw in advo_entries:
        aktennr = raw.decode() if isinstance(raw, bytes) else raw
        score = redis_client.zscore(PENDING_ADVO_KEY, aktennr) or 0
        age = time.time() - score
        redis_client.zrem(PENDING_ADVO_KEY, aktennr)
        redis_client.sadd(PROCESSING_ADVO_KEY, aktennr)
        processed_count += 1
        ctx.logger.info(f"📋 Aktennummer: {aktennr}  (age={age:.1f}s)")
        try:
            result = await espocrm.list_entities(
                'CAkten',
                where=[{'type': 'equals', 'attribute': 'aktennummer', 'value': int(aktennr)}],
                max_size=1,
            )
            if not result or not result.get('list'):
                ctx.logger.warn(f"⚠️  No CAkten found for aktennummer={aktennr} – removing")
            else:
                akte = result['list'][0]
                await _emit_if_eligible(akte, aktennr, ctx)
        except Exception as e:
            ctx.logger.error(f"❌ Error (aktennr queue) {aktennr}: {e}")
            redis_client.zadd(PENDING_ADVO_KEY, {aktennr: time.time()})
        finally:
            redis_client.srem(PROCESSING_ADVO_KEY, aktennr)

    if not processed_count:
        if advo_pending > 0:
            ctx.logger.info(f"⏸️  Entries pending but all too recent (< {DEBOUNCE_SECS}s)")
        else:
            ctx.logger.info("✓ Queue empty")
    else:
        ctx.logger.info(f"✓ Processed {processed_count} item(s)")

    ctx.logger.info("=" * 60)


async def _emit_if_eligible(akte: dict, aktennr, ctx: FlowContext) -> None:
    """Check eligibility and emit akte.sync if applicable."""
    akte_id = akte['id']
    # Prefer aktennr from argument; fall back to entity field
    aktennummer = aktennr or akte.get('aktennummer')
    sync_schalter = akte.get('syncSchalter', False)
    aktivierungsstatus = str(akte.get('aktivierungsstatus') or '').lower()
    ai_status = str(akte.get('aiAktivierungsstatus') or '').lower()

    advoware_eligible = bool(aktennummer) and sync_schalter and aktivierungsstatus in VALID_ADVOWARE_STATUSES
    xai_eligible = ai_status in VALID_AI_STATUSES

    ctx.logger.info(f"   akte_id              : {akte_id}")
    ctx.logger.info(f"   aktennummer          : {aktennummer or '—'}")
    ctx.logger.info(f"   aktivierungsstatus   : {aktivierungsstatus} ({'✅' if advoware_eligible else '⏭️'})")
    ctx.logger.info(f"   aiAktivierungsstatus : {ai_status} ({'✅' if xai_eligible else '⏭️'})")

    if not advoware_eligible and not xai_eligible:
        ctx.logger.warn(f"⚠️  Akte {akte_id} not eligible for any sync")
        return

    await ctx.enqueue({
        'topic': 'akte.sync',
        'data': {
            'akte_id': akte_id,
            'aktennummer': aktennummer,  # may be None for xAI-only Akten
        },
    })
    ctx.logger.info(f"📤 akte.sync emitted (akte_id={akte_id}, aktennummer={aktennummer or '—'})")