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#!/bin/sh

set -e
set -x

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"
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
    echo "The hostname $HOST didn't resolve to an IP address"
    exit 1
fi

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

if [ "$(whoami)" != "$UNIX_USER" ]
then
    echo "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"

# 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

# Install the compass gem locally - it's required for generating the
# CSS:

export GEM_HOME="$DIRECTORY/gems"
mkdir -p "$GEM_HOME"
export GEM_PATH=
export PATH="$GEM_HOME/bin:$PATH"

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

# Write sensible values into the config 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

# Create the database if it doesn't exist:
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
fi

# Install the required Perl modules - this may take a very long time:

cd "$REPOSITORY"
bin/install_perl_modules

# Generate po and mo files (these invocations taken from Kagee's script):

bin/cron-wrapper bin/make_po FixMyStreet-EmptyHomes
bin/cron-wrapper bin/make_emptyhomes_welsh_po

commonlib/bin/gettext-makemo FixMyStreet