{{- if .Values.enabled }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ include "pgbouncer.fullname" . }}-bootstrap
  namespace: {{ include "pgbouncer.namespace" . }}
  labels:
    {{- include "pgbouncer.labels" . | nindent 4 }}
data:
  entrypoint.sh: |
    #!/bin/sh
    set -eu

    POSTGRES_HOST="${POSTGRES_HOST:?POSTGRES_HOST is required}"
    POSTGRES_PORT="${POSTGRES_PORT:-5432}"
    PGBOUNCER_PORT="${PGBOUNCER_PORT:-6432}"
    POSTGRES_SUPERUSER_NAME="${POSTGRES_USER:-postgres}"
    DB_USER_SERVER_NAME="${DB_USER_SERVER:-app_user}"
    SERVER_DATABASE="${SERVER_DATABASE:-server}"
    ADMIN_DATABASE="${ADMIN_DATABASE:-postgres}"

    cat > /work/pgbouncer.ini <<EOF
    [databases]
    ${SERVER_DATABASE} = host=${POSTGRES_HOST} port=${POSTGRES_PORT} dbname=${SERVER_DATABASE}
    ${ADMIN_DATABASE} = host=${POSTGRES_HOST} port=${POSTGRES_PORT} dbname=${ADMIN_DATABASE}

    [pgbouncer]
    listen_addr = 0.0.0.0
    listen_port = ${PGBOUNCER_PORT}
    auth_type = ${AUTH_TYPE:-scram-sha-256}
    auth_file = /work/userlist.txt
    pool_mode = ${POOL_MODE:-transaction}
    max_client_conn = ${MAX_CLIENT_CONN:-1000}
    default_pool_size = ${DEFAULT_POOL_SIZE:-20}
    min_pool_size = ${MIN_POOL_SIZE:-10}
    reserve_pool_size = ${RESERVE_POOL_SIZE:-10}
    reserve_pool_timeout = ${RESERVE_POOL_TIMEOUT:-5}
    max_db_connections = ${MAX_DB_CONNECTIONS:-100}
    max_user_connections = ${MAX_USER_CONNECTIONS:-100}
    server_reset_query = DISCARD ALL
    ignore_startup_parameters = extra_float_digits
    idle_transaction_timeout = ${IDLE_TRANSACTION_TIMEOUT:-300}
    server_idle_timeout = ${SERVER_IDLE_TIMEOUT:-600}
    EOF

    {
      printf '"%s" "%s"\n' "$DB_USER_SERVER_NAME" "$DB_PASSWORD_SERVER"
      printf '"%s" "%s"\n' "$POSTGRES_SUPERUSER_NAME" "$POSTGRES_PWD"
    } > /work/userlist.txt

    chmod 600 /work/userlist.txt
    exec pgbouncer /work/pgbouncer.ini
{{- end }}