"""Re-send yesterday's Slack report from Baserow snapshots."""
import json
from datetime import datetime, timedelta

import config
from meta_ads_client import MetaAdsClient
from baserow_client import BaserowClient
import slack_notifier


def _extract_vertical(name: str) -> str:
    prefix = config.META_CAMPAIGN_PREFIX
    rest = name[len(prefix):].lstrip("_")
    parts = rest.split("_")
    start = 1 if parts and parts[0].isdigit() else 0
    return parts[start].lower() if start < len(parts) else "otros"


def main():
    import sys as _sys
    run_date = _sys.argv[1] if len(_sys.argv) > 1 else (datetime.now() - timedelta(days=1)).strftime("%Y-%m-%d")
    print(f"Reenviando informe para {run_date}...")

    meta = MetaAdsClient()
    baserow = BaserowClient()

    # ── Vertical CPL targets ──────────────────────────────────────────────────
    vertical_cpls: dict = {}
    try:
        for v in baserow.get_all_verticals():
            name = (v.get("Nombre") or "").strip().lower()
            cpl = float(v.get("target_cpl") or 0)
            if name and cpl:
                vertical_cpls[name] = cpl
        print(f"  ✓ Verticales: {vertical_cpls}")
    except Exception as e:
        print(f"  ⚠ No se pudieron cargar verticales: {e}")

    # ── Monthly daily totals ──────────────────────────────────────────────────
    print("Obteniendo datos mensuales de Meta...")
    daily_rows = meta.get_monthly_daily_totals()
    _daily: dict = {}
    monthly_verticals: dict = {}
    for row in daily_rows:
        v = _extract_vertical(row["campaign_name"])
        target = vertical_cpls.get(v, config.META_TARGET_CPL)
        margin = (
            round((target - row["spend"] / row["leads"]) * row["leads"], 2)
            if row["leads"] > 0 else round(-row["spend"], 2)
        )
        d = _daily.setdefault(row["date"], {"spend": 0.0, "leads": 0, "margin": 0.0})
        d["spend"] += row["spend"]
        d["leads"] += row["leads"]
        d["margin"] += margin
        mv = monthly_verticals.setdefault(v, {"spend": 0.0, "leads": 0, "margin": 0.0, "target_cpl": target})
        mv["spend"]  += row["spend"]
        mv["leads"]  += row["leads"]
        mv["margin"] += margin
    daily_totals = [
        {
            "date": date,
            "spend": round(d["spend"], 2),
            "leads": int(d["leads"]),
            "cpl": round(d["spend"] / d["leads"], 2) if d["leads"] > 0 else 0.0,
            "margin": round(d["margin"], 2),
        }
        for date, d in sorted(_daily.items())
    ]
    print(f"  ✓ {len(daily_totals)} días con datos")

    # ── Load proposed actions (to get parameter values) ──────────────────────
    action_params: dict = {}  # campaign_name → parameter
    try:
        all_actions = baserow._get_rows(config.BASEROW_TABLE_ACTIONS, {
            "filter__proposed_at__equal": run_date,
        })
        for a in all_actions:
            cname = a.get("campaign_name", "")
            param = a.get("parameter")
            if cname and param:
                action_params[cname] = float(param)
        print(f"  ✓ {len(action_params)} parámetros de acción cargados")
    except Exception as e:
        print(f"  Aviso: no se pudieron cargar parámetros de acción: {e}")

    # ── Load snapshots from Baserow ───────────────────────────────────────────
    print(f"Cargando snapshots de Baserow para {run_date}...")
    snapshots = baserow.get_snapshots_for_date(run_date)
    print(f"  ✓ {len(snapshots)} snapshots encontrados")

    if not snapshots:
        print("ERROR: No hay snapshots en Baserow para esta fecha. "
              "Ejecuta run.py primero.")
        return

    # ── Reconstruct data structures ───────────────────────────────────────────
    campaign_details: dict = {}
    actions: list = []
    verticals: dict = {}
    metrics_all: dict = {}

    for snap in snapshots:
        cid = snap.get("campaign_id") or snap.get("campaign_name", "")
        name = snap["campaign_name"]
        vertical = snap.get("vertical") or _extract_vertical(name)
        margin = float(snap.get("margin") or 0)
        spend = float(snap.get("spend") or 0)
        leads = int(snap.get("leads") or 0)
        cpl = float(snap.get("cpl") or 0)
        action_type = snap.get("action_type") or "MAINTAIN"

        try:
            adsets = json.loads(snap.get("adsets_json") or "[]")
        except Exception:
            adsets = []
        try:
            ads = json.loads(snap.get("ads_json") or "[]")
        except Exception:
            ads = []

        campaign_details[cid] = {
            "name": name,
            "vertical": vertical,
            "margin": margin,
            "adsets": adsets,
            "ads": ads,
            "bid_config": {},
        }
        metrics_all[cid] = {"name": name, "spend": spend, "leads": leads, "cpl": cpl}

        if action_type != "MAINTAIN":
            actions.append({
                "campaign_name": name,
                "action_type": action_type,
                "justification": snap.get("justification") or "",
                "advice": "",
                "alert": "",
                "confidence": 0.8,
                "cpl": cpl,
                "parameter": action_params.get(name, 1.0),
                "row_id": snap["id"],
            })

        max_cpl = vertical_cpls.get(vertical, config.META_TARGET_CPL)
        if vertical not in verticals:
            verticals[vertical] = {"spend": 0.0, "leads": 0, "margin": 0.0, "target_cpl": max_cpl}
        verticals[vertical]["spend"] += spend
        verticals[vertical]["leads"] += leads
        verticals[vertical]["margin"] += margin

    # ── Best / worst ──────────────────────────────────────────────────────────
    with_leads = [m for m in metrics_all.values() if m["leads"] > 0]
    best_10 = sorted(with_leads, key=lambda x: x["cpl"])[:10]
    worst_10 = sorted(
        list(metrics_all.values()),
        key=lambda x: (x["leads"] > 0, -x["cpl"] if x["leads"] > 0 else 0),
    )[:10]

    # ── Send ──────────────────────────────────────────────────────────────────
    print("Enviando a Slack...")
    ts = slack_notifier.send_daily_report(
        daily_totals=daily_totals,
        best_campaigns=best_10,
        worst_campaigns=worst_10,
        actions=actions,
        target_cpl=config.META_TARGET_CPL,
        campaigns_analyzed=len(snapshots),
        mode="DRY_RUN",
        verticals=verticals,
        campaign_details=campaign_details,
        monthly_verticals=monthly_verticals,
    )
    if ts:
        print(f"  ✓ Mensaje enviado (ts={ts})")
    else:
        print("  ✗ Error al enviar (revisa token y canal)")


if __name__ == "__main__":
    main()