#!/usr/bin/env python3
"""
Migración: Importar archivos existentes de secretaria_clara.atc a storage
"""

import asyncio
import asyncpg
import os
import json

DB_URL = os.environ.get("DATABASE_URL", "postgresql://tzzr:tzzr@localhost:5432/tzzr")


async def migrate():
    pool = await asyncpg.create_pool(DB_URL, min_size=2, max_size=10)

    async with pool.acquire() as conn:
        # Obtener archivos de atc que tienen hash y url_file
        atc_files = await conn.fetch("""
            SELECT
                mrf,
                private_mrf,
                alias,
                name_es,
                ref,
                ext,
                jsonb_standard,
                hashtags
            FROM secretaria_clara.atc
            WHERE jsonb_standard IS NOT NULL
            AND jsonb_standard->'L2_document'->>'url_file' IS NOT NULL
        """)

        print(f"Encontrados {len(atc_files)} archivos en atc")

        migrated = 0
        skipped = 0
        errors = 0

        for file in atc_files:
            try:
                mrf = file["mrf"]
                jsonb = file["jsonb_standard"] or {}

                # Extraer datos
                l2 = jsonb.get("L2_document", {})
                url_file = l2.get("url_file")
                size_bytes = l2.get("size_bytes", 0)
                mime_type = l2.get("mime_type", "application/octet-stream")

                if not url_file:
                    skipped += 1
                    continue

                # Verificar si ya existe en storage
                existing = await conn.fetchrow("""
                    SELECT content_hash FROM storage.physical_blobs
                    WHERE content_hash = $1
                """, mrf)

                if existing:
                    skipped += 1
                    continue

                # Insertar en physical_blobs
                await conn.execute("""
                    INSERT INTO storage.physical_blobs
                    (content_hash, file_size, mime_type, storage_provider, storage_path, verification_status)
                    VALUES ($1, $2, $3, 'R2_PRIMARY', $4, 'VERIFIED')
                """, mrf, size_bytes, mime_type, url_file)

                # Crear user_asset con el mismo public_key que el mrf
                # Usamos un UUID dummy para user_id ya que no tenemos usuarios
                await conn.execute("""
                    INSERT INTO storage.user_assets
                    (public_key, blob_hash, user_id, original_filename)
                    VALUES ($1, $2, '00000000-0000-0000-0000-000000000000'::uuid, $3)
                    ON CONFLICT (public_key) DO NOTHING
                """, mrf, mrf, file["name_es"] or file["alias"] or mrf[:20])

                migrated += 1

                if migrated % 100 == 0:
                    print(f"  Migrados: {migrated}")

            except Exception as e:
                errors += 1
                print(f"Error migrando {file['mrf']}: {e}")

        print(f"\nMigración completada:")
        print(f"  - Migrados: {migrated}")
        print(f"  - Saltados (ya existían o sin datos): {skipped}")
        print(f"  - Errores: {errors}")

        # Actualizar ref_count
        await conn.execute("""
            UPDATE storage.physical_blobs pb
            SET ref_count = (
                SELECT COUNT(*) FROM storage.user_assets ua
                WHERE ua.blob_hash = pb.content_hash
            )
        """)
        print("  - ref_count actualizado")

    await pool.close()


if __name__ == "__main__":
    asyncio.run(migrate())