#!/bin/sh

set -e
error_msg() { printf "\033[31m%s\033[0m\n" "$*"; }
notice_msg() { printf "\033[33m%s\033[0m " "$*"; }
done_msg() { printf "\033[32m%s\033[0m\n" "$*"; }
DONE_MSG=$(done_msg done)

if [ $# -ne 3 ]
then
    cat >&2 <<EOUSAGE
Usage: $0 <UNIX-USER> <HOST> <INSTALLATION-DIRECTORY>
EOUSAGE
    exit 1
fi

UNIX_USER="$1"
HOST="$2"
DIRECTORY="$3"

misuse() {
  echo The variable $1 was not defined, and it should be.
  echo This script should not be run directly.
  exit 1
}

[ -z "$DEVELOPMENT_INSTALL" ] && misuse DEVELOPMENT_INSTALL

DB_NAME="fixmystreet"

# Check that the arguments we've been passed are sensible:

IP_ADDRESS_FOR_HOST="$(dig +short $HOST)"

if [ x = x"$IP_ADDRESS_FOR_HOST" ]
then
    error_msg "The hostname $HOST didn't resolve to an IP address"
    exit 1
fi

if ! id "$UNIX_USER" 2> /dev/null > /dev/null
then
    error_msg "The user '$UNIX_USER' didn't exist."
    exit 1
fi

if [ "$(whoami)" != "$UNIX_USER" ]
then
    error_msg "This script should be run by the user '$UNIX_USER'."
    exit 1
fi

REPOSITORY="$DIRECTORY/fixmystreet"
LINK_DESTINATION="$HOME/fixmystreet"

ln -sfn "$REPOSITORY" $LINK_DESTINATION
cd "$REPOSITORY"

if [ ! "$DEVELOPMENT_INSTALL" = true ]; then
    echo -n "Adding crontab... "
    # Add regularly scheduled tasks to cron:
    TEMPORARY_CRONTAB=$(mktemp)
    echo crontab file is $TEMPORARY_CRONTAB
    cp "$REPOSITORY"/conf/crontab.example "$TEMPORARY_CRONTAB"
    sed -i \
        -e 's,$FMS,'"$REPOSITORY,g" \
        -e 's,$LOCK_DIR,'"$DIRECTORY,g" \
        "$TEMPORARY_CRONTAB"
    crontab $TEMPORARY_CRONTAB
    echo $DONE_MSG
fi

# Install the compass gem locally - it's required for generating the
# CSS:
echo "Setting up CSS... "
export GEM_HOME="$DIRECTORY/gems"
mkdir -p "$GEM_HOME"
export GEM_PATH=
export PATH="$GEM_HOME/bin:$PATH"

if ! grep -q 'Set up local gem directory for FixMyStreet' $HOME/.bashrc; then
    cat >>$HOME/.bashrc <<EOBRC

# Set up local gem directory for FixMyStreet
export GEM_HOME="$DIRECTORY/gems"
export GEM_PATH=
export PATH="\$GEM_HOME/bin:\$PATH"
EOBRC
fi

gem install --no-ri --no-rdoc compass

# Use compass to generate the CSS, if it doesn't seem to already
# exist:
if [ ! -f web/cobrands/default/base.css ]
then
    bin/make_css
fi
echo $DONE_MSG

# Write sensible values into the config file, if it doesn't already exist
if [ ! -f conf/general.yml ]; then
    echo -n "Setting up default conf/general.yml file... "
    sed -r \
        -e "s,^( *FMS_DB_HOST:).*,\\1 ''," \
        -e "s,^( *FMS_DB_NAME:).*,\\1 '$DB_NAME'," \
        -e "s,^( *FMS_DB_USER:).*,\\1 '$UNIX_USER'," \
        -e "s,^( *BASE_URL:).*,\\1 'http://$HOST'," \
        -e "s,^( *EMAIL_DOMAIN:).*,\\1 '$HOST'," \
        -e "s,^( *CONTACT_EMAIL:).*,\\1 'help@$HOST'," \
        -e "s,^( *DO_NOT_REPLY_EMAIL:).*,\\1 'help@$HOST'," \
        conf/general.yml-example > conf/general.yml
    echo $DONE_MSG
fi

# Create the database if it doesn't exist:
echo -n "Setting up database... "
if ! psql -l | egrep "^ *$DB_NAME *\|" > /dev/null
then
    createdb --owner "$UNIX_USER" "$DB_NAME"
    echo 'CREATE LANGUAGE plpgsql;' | psql -U "$UNIX_USER" "$DB_NAME" || true
    psql -U "$UNIX_USER" "$DB_NAME" < "$REPOSITORY"/db/schema.sql
    psql -U "$UNIX_USER" "$DB_NAME" < "$REPOSITORY"/db/alert_types.sql
    psql -U "$UNIX_USER" "$DB_NAME" < "$REPOSITORY"/db/generate_secret.sql
else
    bin/cron-wrapper update-schema --commit
fi
echo $DONE_MSG

echo "Installing required Perl modules - this may take some time"
cd "$REPOSITORY"
bin/install_perl_modules
echo $DONE_MSG

# Generate po and mo files (these invocations taken from Kagee's script):
echo "Creating locale .mo files"
bin/cron-wrapper bin/make_po FixMyStreet-EmptyHomes
bin/cron-wrapper bin/make_emptyhomes_welsh_po
commonlib/bin/gettext-makemo FixMyStreet
echo $DONE_MSG

bin/cron-wrapper update-all-reports