#!/usr/bin/env bash

set -Eeuo pipefail

SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=install_common.sh
source "$SCRIPT_DIR/install_common.sh"

readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"

[[ $# -eq 1 ]] || die "Usage: $0 <postgresql-version>"
readonly POSTGRES_VERSION="$1"
validate_postgresql_version "$POSTGRES_VERSION"
require_tools curl tar make
readonly PREFIX="$POSTGRES_ROOT/$POSTGRES_VERSION"
readonly PG_CONFIG="$PREFIX/bin/pg_config"
require_postgresql_installation "$PREFIX"
reset_staging_dir "$STAGING_DIR"

printf 'Building pg_stat_statements from PostgreSQL %s\n' "$POSTGRES_VERSION"
readonly POSTGRES_ARCHIVE="$STAGING_DIR/postgresql-$POSTGRES_VERSION.tar.gz"
readonly POSTGRES_SOURCE="$STAGING_DIR/postgresql-$POSTGRES_VERSION"
curl -fL --retry 3 --retry-delay 2 \
  -o "$POSTGRES_ARCHIVE" \
  "https://ftp.postgresql.org/pub/source/v$POSTGRES_VERSION/postgresql-$POSTGRES_VERSION.tar.gz"
tar -xzf "$POSTGRES_ARCHIVE" -C "$STAGING_DIR"
make -C "$POSTGRES_SOURCE/contrib/pg_stat_statements" \
  -j"${JOBS:-$(nproc)}" USE_PGXS=1 PG_CONFIG="$PG_CONFIG"
make -C "$POSTGRES_SOURCE/contrib/pg_stat_statements" \
  install USE_PGXS=1 PG_CONFIG="$PG_CONFIG"
grep -E '^default_version' "$PREFIX/share/extension/pg_stat_statements.control"