"""Shared test fixtures for E2E tests."""

import os
from pathlib import Path

import duckdb
import pytest


@pytest.fixture
def e2e_env(tmp_path):
    """Set up complete E2E environment with DATA_DIR, create dirs."""
    os.environ["DATA_DIR"] = str(tmp_path)
    os.environ["JWT_SECRET_KEY"] = "test-secret-e2e"

    (tmp_path / "extracts").mkdir()
    (tmp_path / "analytics").mkdir()
    (tmp_path / "state").mkdir()

    yield {
        "data_dir": tmp_path,
        "extracts_dir": tmp_path / "extracts",
        "analytics_db": str(tmp_path / "analytics" / "server.duckdb"),
    }

    os.environ.pop("DATA_DIR", None)
    os.environ.pop("JWT_SECRET_KEY", None)


def create_mock_extract(extracts_dir: Path, source_name: str, tables: list[dict]):
    """Create a mock extract.duckdb with _meta and data tables.

    tables: [{"name": "orders", "data": [{"id": "1", "total": "100"}], "query_mode": "local"}]
    """
    source_dir = extracts_dir / source_name
    source_dir.mkdir(exist_ok=True)
    data_dir = source_dir / "data"
    data_dir.mkdir(exist_ok=True)

    db_path = source_dir / "extract.duckdb"
    conn = duckdb.connect(str(db_path))

    conn.execute("""CREATE TABLE IF NOT EXISTS _meta (
        table_name VARCHAR, description VARCHAR, rows BIGINT,
        size_bytes BIGINT, extracted_at TIMESTAMP, query_mode VARCHAR DEFAULT 'local'
    )""")
    # Delete existing meta rows to allow re-calling
    conn.execute("DELETE FROM _meta")

    for t in tables:
        name = t["name"]
        rows_data = t.get("data", [])
        query_mode = t.get("query_mode", "local")

        if rows_data and query_mode == "local":
            # Write actual parquet file
            pq_path = str(data_dir / f"{name}.parquet")
            # Build SQL from data
            selects = []
            for row in rows_data:
                vals = ", ".join(f"'{v}' AS {k}" for k, v in row.items())
                selects.append(f"SELECT {vals}")
            union_sql = " UNION ALL ".join(selects)
            conn.execute(f"COPY ({union_sql}) TO '{pq_path}' (FORMAT PARQUET)")

            rows = len(rows_data)
            size = os.path.getsize(pq_path)
            conn.execute(f'CREATE OR REPLACE VIEW "{name}" AS SELECT * FROM read_parquet(\'{pq_path}\')')
            conn.execute("INSERT INTO _meta VALUES (?, ?, ?, ?, current_timestamp, 'local')",
                        [name, t.get("description", ""), rows, size])
        else:
            # Remote or empty table
            conn.execute(f'CREATE TABLE IF NOT EXISTS "{name}" (id VARCHAR)')
            conn.execute("INSERT INTO _meta VALUES (?, ?, 0, 0, current_timestamp, ?)",
                        [name, t.get("description", ""), query_mode])

    conn.close()
    return db_path


def write_test_parquet(path: str, data: list[dict]):
    """Create a parquet file from list of dicts."""
    conn = duckdb.connect()
    selects = []
    for row in data:
        vals = ", ".join(f"'{v}' AS {k}" for k, v in row.items())
        selects.append(f"SELECT {vals}")
    union_sql = " UNION ALL ".join(selects)
    conn.execute(f"COPY ({union_sql}) TO '{path}' (FORMAT PARQUET)")
    conn.close()


@pytest.fixture
def seeded_app(e2e_env):
    """FastAPI TestClient with seeded admin + analyst users, JWT tokens."""
    from src.db import get_system_db
    from src.repositories.users import UserRepository
    from app.auth.jwt import create_access_token
    from app.main import create_app
    from fastapi.testclient import TestClient

    conn = get_system_db()
    repo = UserRepository(conn)
    repo.create(id="admin1", email="admin@test.com", name="Admin", role="admin")
    repo.create(id="analyst1", email="analyst@test.com", name="Analyst", role="analyst")
    conn.close()

    app = create_app()
    client = TestClient(app)
    admin_token = create_access_token("admin1", "admin@test.com", "admin")
    analyst_token = create_access_token("analyst1", "analyst@test.com", "analyst")

    return {
        "client": client,
        "admin_token": admin_token,
        "analyst_token": analyst_token,
        "env": e2e_env,
    }