import os
import frappe
import semantic_version

from frappe.commands.site import _new_site
from frappe.installer import update_site_config
from constants import COMMON_SITE_CONFIG_FILE, RDS_DB, RDS_PRIVILEGES
from utils import (
    run_command,
    get_config,
    get_site_config,
    get_password,
)


def main():
    config = get_config()
    db_type = 'mariadb'
    db_port = config.get('db_port', 3306)
    db_host = config.get('db_host')
    site_name = os.environ.get("SITE_NAME", 'site1.localhost')
    db_root_username = os.environ.get("DB_ROOT_USER", 'root')
    mariadb_root_password = get_password("MYSQL_ROOT_PASSWORD", 'admin')
    postgres_root_password = get_password("POSTGRES_PASSWORD")
    db_root_password = mariadb_root_password

    if postgres_root_password:
        db_type = 'postgres'
        db_host = os.environ.get("POSTGRES_HOST")
        db_port = 5432
        db_root_password = postgres_root_password
        if not db_host:
            db_host = config.get('db_host')
            print('Environment variable POSTGRES_HOST not found.')
            print('Using db_host from common_site_config.json')

        sites_path = os.getcwd()
        common_site_config_path = os.path.join(sites_path, COMMON_SITE_CONFIG_FILE)
        update_site_config("root_login", db_root_username, validate = False, site_config_path = common_site_config_path)
        update_site_config("root_password", db_root_password, validate = False, site_config_path = common_site_config_path)

    force = True if os.environ.get("FORCE", None) else False
    install_apps = os.environ.get("INSTALL_APPS", None)
    install_apps = install_apps.split(',') if install_apps else []
    frappe.init(site_name, new_site=True)

    if semantic_version.Version(frappe.__version__).major > 11:
        _new_site(
            None,
            site_name,
            mariadb_root_username=db_root_username,
            mariadb_root_password=db_root_password,
            admin_password=get_password("ADMIN_PASSWORD", 'admin'),
            verbose=True,
            install_apps=install_apps,
            source_sql=None,
            force=force,
            db_type=db_type,
            reinstall=False,
            db_host=db_host,
            db_port=db_port,
        )
    else:
        _new_site(
            None,
            site_name,
            mariadb_root_username=db_root_username,
            mariadb_root_password=db_root_password,
            admin_password=get_password("ADMIN_PASSWORD", 'admin'),
            verbose=True,
            install_apps=install_apps,
            source_sql=None,
            force=force,
            reinstall=False,
        )


    if db_type == "mariadb":
        site_config = get_site_config(site_name)
        db_name = site_config.get('db_name')
        db_password = site_config.get('db_password')

        mysql_command = ["mysql", f"-h{db_host}", f"-u{mariadb_root_username}", f"-p{mariadb_root_password}", "-e"]

        # Drop User if exists
        command = mysql_command + [f"DROP USER IF EXISTS '{db_name}'@'%'; FLUSH PRIVILEGES;"]
        run_command(command)

        # update User's host to '%' required to connect from any container
        command = mysql_command + [f"UPDATE mysql.user SET Host = '%' where User = '{db_name}'; FLUSH PRIVILEGES;"]
        run_command(command)

        # Set db password
        command = mysql_command + [f"ALTER USER '{db_name}'@'%' IDENTIFIED BY '{db_password}'; FLUSH PRIVILEGES;"]
        run_command(command)

        # Grant permission to database
        grant_privileges = "ALL PRIVILEGES"

        # for Amazon RDS
        if config.get(RDS_DB) or site_config.get(RDS_DB):
            grant_privileges = RDS_PRIVILEGES

        command = mysql_command + [f"GRANT {grant_privileges} ON `{db_name}`.* TO '{db_name}'@'%'; FLUSH PRIVILEGES;"]
        run_command(command)

    if frappe.redis_server:
        frappe.redis_server.connection_pool.disconnect()

    exit(0)


if __name__ == "__main__":
    main()