"""
Migration: Add fields from feedback fixes
Date: 2025-01-07

Adds the following fields:
- projects.is_archived (INTEGER, default 0)
- companies.product_service (TEXT, nullable)
- companies.clients (TEXT, nullable - stored as JSON string)
- investor_members.linkedin (VARCHAR, nullable)
"""

import sys
from pathlib import Path

# Add parent directory to path to import app modules
sys.path.insert(0, str(Path(__file__).parent.parent))

from sqlalchemy import text

from app.db.db import engine


def check_column_exists(conn, table_name, column_name):
    """Check if a column exists in a table"""
    result = conn.execute(text(f"PRAGMA table_info({table_name})"))
    columns = [row[1] for row in result]
    return column_name in columns


def upgrade():
    """Add new columns to tables"""
    print("Running migration: Add feedback fixes fields")
    print("=" * 60)

    with engine.begin() as conn:  # Use begin() for transaction management
        # 1. Add is_archived to projects table
        print("\n1. Adding 'is_archived' column to projects table...")
        if check_column_exists(conn, "projects", "is_archived"):
            print("   ✓ Column 'is_archived' already exists. Skipping.")
        else:
            conn.execute(
                text(
                    "ALTER TABLE projects ADD COLUMN is_archived INTEGER DEFAULT 0 NOT NULL"
                )
            )
            # Set default value for existing rows
            conn.execute(
                text("UPDATE projects SET is_archived = 0 WHERE is_archived IS NULL")
            )
            print("   ✓ Successfully added 'is_archived' column to projects table")

        # 2. Add product_service to companies table
        print("\n2. Adding 'product_service' column to companies table...")
        if check_column_exists(conn, "companies", "product_service"):
            print("   ✓ Column 'product_service' already exists. Skipping.")
        else:
            conn.execute(text("ALTER TABLE companies ADD COLUMN product_service TEXT"))
            print("   ✓ Successfully added 'product_service' column to companies table")

        # 3. Add clients to companies table
        print("\n3. Adding 'clients' column to companies table...")
        if check_column_exists(conn, "companies", "clients"):
            print("   ✓ Column 'clients' already exists. Skipping.")
        else:
            conn.execute(text("ALTER TABLE companies ADD COLUMN clients TEXT"))
            print("   ✓ Successfully added 'clients' column to companies table")

        # 4. Add linkedin to investor_members table
        print("\n4. Adding 'linkedin' column to investor_members table...")
        if check_column_exists(conn, "investor_members", "linkedin"):
            print("   ✓ Column 'linkedin' already exists. Skipping.")
        else:
            conn.execute(
                text("ALTER TABLE investor_members ADD COLUMN linkedin VARCHAR")
            )
            print("   ✓ Successfully added 'linkedin' column to investor_members table")

    print("\n" + "=" * 60)
    print("Migration completed successfully!")


def downgrade():
    """Remove added columns from tables"""
    print("Running downgrade: Remove feedback fixes fields")
    print("=" * 60)

    # Note: SQLite doesn't support DROP COLUMN directly
    print("\nWarning: SQLite doesn't support DROP COLUMN directly.")
    print("To remove these columns, you would need to:")
    print("1. Create new tables without the columns")
    print("2. Copy data from old tables to new tables")
    print("3. Drop old tables and rename new tables")
    print("\nColumns to remove:")
    print("  - projects.is_archived")
    print("  - companies.product_service")
    print("  - companies.clients")
    print("  - investor_members.linkedin")


if __name__ == "__main__":
    import argparse

    parser = argparse.ArgumentParser(description="Run database migration")
    parser.add_argument(
        "direction",
        choices=["upgrade", "downgrade"],
        default="upgrade",
        nargs="?",
        help="Migration direction (default: upgrade)",
    )

    args = parser.parse_args()

    if args.direction == "upgrade":
        upgrade()
    else:
        downgrade()