#!/bin/bash -xe

ROOT_POSTGRES="sudo -u postgres psql"
DEFAULT_DB=""
if [ "$(uname)" = "Darwin" ]; then
   ROOT_POSTGRES="psql"
   DEFAULT_DB="postgres"
fi

if [[ $# == 0 ]]; then
    USERNAME=zulip
    PASSWORD=$($(dirname $0)/../bin/get-django-setting LOCAL_DATABASE_PASSWORD)
    DBNAME=zulip
    SEARCH_PATH="$USERNAME",public
elif [[ $# == 4 ]]; then
    USERNAME=$1
    PASSWORD=$2
    DBNAME=$3
    SEARCH_PATH=$4
else
    echo "Usage Instructions"
    echo "Run with either no arguments (sets up devel db for local deploy--zulip with user zulip)"
    echo "or specify <db-username> <password> <db-name> <user-schema-search-path>"
    exit
fi

DBNAME_BASE=${DBNAME}_base

$ROOT_POSTGRES $DEFAULT_DB << EOF
CREATE USER $USERNAME WITH PASSWORD '$PASSWORD';
ALTER USER $USERNAME CREATEDB;
ALTER ROLE $USERNAME SET search_path TO $SEARCH_PATH;
EOF

umask go-rw
PGPASS_LINE="*:*:*:$USERNAME:$PASSWORD"
if ! $(grep -q "$PGPASS_LINE" ~/.pgpass); then
    echo $PGPASS_LINE >> ~/.pgpass
fi
chmod go-rw ~/.pgpass

psql -h localhost postgres $USERNAME <<EOF
DROP DATABASE IF EXISTS $DBNAME;
DROP DATABASE IF EXISTS $DBNAME_BASE;
CREATE DATABASE $DBNAME_BASE
EOF

psql -h localhost $DBNAME_BASE $USERNAME <<EOF
CREATE SCHEMA zulip;
EOF

$ROOT_POSTGRES $DBNAME_BASE << EOF
CREATE EXTENSION tsearch_extras SCHEMA zulip;
EOF

psql -h localhost postgres $USERNAME <<EOF
CREATE DATABASE $DBNAME TEMPLATE $DBNAME_BASE;
EOF

echo "Database created"