"""Macro indicator snapshots (one row per day).

Adds the `macro_snapshots` table backing the BTC page's macro panel. Wide
table — one column per indicator — because every panel view fetches them
all at once and a long EAV table would just need an immediate pivot. Daily
snapshot uniqueness is enforced by a UNIQUE(snapshot_date) constraint so the
fetcher can run safely on cron without producing dupes.

Indicators (all free / public):
  ahr999                  : derived from price + age
  altcoin_season_index    : % of top-50 alts beating BTC over 90d (blockchaincenter formula)
  fear_greed              : alternative.me, 0-100
  btc_dominance_pct       : CoinGecko global
  eth_btc_ratio           : Binance ETHBTC
  stablecoin_supply_usd   : DeFiLlama (USDT+USDC+DAI total)
  etf_flow_net_usd_1d     : Farside Investors (BTC spot ETF daily net flow)
  btc_open_interest_usd   : Binance fapi open interest
  composite_score         : -100..100 weighted blend computed at insert time
  regime_label            : "BULL" | "BULLISH" | "NEUTRAL" | "BEARISH" | "BEAR"

`raw_json` retains the full upstream payload per indicator in case we want
to recompute or audit historical fetches without re-hitting the APIs.

Revision ID: 022
Revises: 021
Create Date: 2026-05-25
"""
from alembic import op
import sqlalchemy as sa

revision = "022"
down_revision = "021"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "macro_snapshots",
        sa.Column("id",            sa.Integer, primary_key=True),
        sa.Column("snapshot_date", sa.Date, nullable=False, unique=True, index=True),
        sa.Column("captured_at",   sa.DateTime, nullable=False),

        # The indicators. All nullable — any single upstream failure shouldn't
        # block the whole row; we record what we got and leave the rest NULL.
        sa.Column("ahr999",                 sa.Float, nullable=True),
        sa.Column("altcoin_season_index",   sa.Float, nullable=True),
        sa.Column("fear_greed",             sa.Integer, nullable=True),
        sa.Column("fear_greed_label",       sa.String(32), nullable=True),
        sa.Column("btc_dominance_pct",      sa.Float, nullable=True),
        sa.Column("eth_btc_ratio",          sa.Float, nullable=True),
        sa.Column("stablecoin_supply_usd",  sa.Float, nullable=True),
        sa.Column("etf_flow_net_usd_1d",    sa.Float, nullable=True),
        sa.Column("btc_open_interest_usd",  sa.Float, nullable=True),

        # Optional composite — see app/services/macro/scoring.py.
        sa.Column("composite_score", sa.Float, nullable=True),
        sa.Column("regime_label",    sa.String(16), nullable=True),

        # Raw payload per indicator for debugging / re-scoring.
        sa.Column("raw_json", sa.Text, nullable=True),
    )


def downgrade() -> None:
    op.drop_table("macro_snapshots")