#!/bin/bash
#
# uoj-db image preparation.  Runs at *build* time and only stages files for
# the mysql entrypoint, which executes /docker-entrypoint-initdb.d/* on the
# first start (i.e. when ./uoj_data/db/mysql is empty).
set -eu

setLAMPConf(){
    printf "\n\n==> Setting mysqld config\n"
    # NOTE: the previous version wrote `init_connect` twice; mysqld keeps only
    # the last occurrence, so the connection charset was never applied.
    cat >/etc/mysql/conf.d/uoj_mysqld.cnf <<UOJEOF
[mysqld]
default-time-zone='+8:00'
character-set-server=utf8mb4
collation-server=utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci'
skip-character-set-client-handshake
sql-mode=ONLY_FULL_GROUP_BY,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
UOJEOF
}

setWebConf(){
    printf "\n\n==> Staging database init scripts\n"

    cat >/docker-entrypoint-initdb.d/000-native_password.sql <<UOJEOF
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'root';
UOJEOF

    for f in app_uoj233.sql add_judger.sql; do
        if [ ! -s "$f" ]; then
            echo "ERROR: $f is missing or empty" >&2
            exit 1
        fi
    done

    # 001 is the current schema (30 tables, includes the WyOJ additions:
    # songs / pastes / rp / datum_* and the extra user_info columns).
    # See ../docker-compose.seed.yml to import a full dump instead.
    cp app_uoj233.sql /docker-entrypoint-initdb.d/001-app_uoj233.sql
    cp add_judger.sql /docker-entrypoint-initdb.d/002-add_judger.sql

    ls -l /docker-entrypoint-initdb.d/
}

echo 'Preparing UOJ System db environment...'
setLAMPConf
setWebConf