import os

import frappe
import semantic_version
from constants import COMMON_SITE_CONFIG_FILE, RDS_DB, RDS_PRIVILEGES
from frappe.installer import update_site_config
from utils import get_config, get_password, get_site_config, run_command

# try to import _new_site from frappe, which could possibly
# exist in either commands.py or installer.py, and so we need
# to maintain compatibility across all frappe versions.
try:
    # <= version-{11,12}
    from frappe.commands.site import _new_site
except ImportError:
    # >= version-13 and develop
    from frappe.installer import _new_site


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{db_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)

        # Grant permission to database and set password
        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"\
            CREATE USER IF NOT EXISTS '{db_name}'@'%' IDENTIFIED BY '{db_password}'; \
            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()