#!/usr/bin/env bash

CLASS_NAME="MJB::DB"

if [ -z $CLASS_NAME ]; then
    echo "Please call this script as $0 Your::Schema"
    exit 1
fi


# Generate a random 8 character name for the docker container that holds the PSQL database.
PSQL_NAME=$(LC_ALL=C tr -dc 'a-zA-Z' < /dev/urandom | fold -w 8 | head -n 1)
if [ -z "$PSQL_NAME" ]; then
    echo 'Command failed: PSQL_NAME=$(LC_ALL=C tr -dc 'a-zA-Z' < /dev/urandom | fold -w 8 | head -n 1)'
    exit 1
fi

# Launch a PSQL Instance
PSQL_DOCKER=$(docker run --rm --name "$PSQL_NAME" -e POSTGRES_PASSWORD=dbic -e POSTGRES_USER=dbic -e POSTGRES_DB=dbic -d \
    --mount "type=bind,src=$PWD/etc/schema.sql,dst=/docker-entrypoint-initdb.d/schema.sql" postgres:13)

if [ -z "$PSQL_DOCKER" ]; then
	echo "Failed to get id for PSQL docker container."
	exit 1
fi

echo "Loading DB schema...."

# Give a few seconds for the database to come up, then if it's existed there is likely an issue
# with the schema.
sleep 5;

PSQL_DOCKER_COUNT=$(docker ps --filter id=$PSQL_DOCKER | wc -l)

if [ $PSQL_DOCKER_COUNT -ne 2 ]; then
    echo 'Failed to load schema, view error with the following:'
    echo 'docker run --rm -e POSTGRES_PASSWORD=password --mount "type=bind,src=$PWD/etc/schema.sql,dst=/docker-entrypoint-initdb.d/schema.sql" postgres:13'
    exit -1;
fi

docker run --rm --link "$PSQL_NAME:psqldb" --mount "type=bind,src=$PWD,dst=/app" symkat/schema_builder:3 /bin/build-schema "$CLASS_NAME"

docker kill "$PSQL_DOCKER"

if [ -d 'lib' ]; then
    sudo chown -R "$USER:$USER" lib
else
    echo 'Failed to find lib directory. This should have been created automatically.'
fi