#!/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="${POSTGRES_ROOT:-/app/postgres/rdbms}"
readonly TIMESCALEDB_REPOSITORY="${TIMESCALEDB_REPOSITORY:-timescale/timescaledb}"

if [[ "${1:-}" == "--help" || "${1:-}" == "-h" ]]; then
  show_help "$0" "Build and install TimescaleDB for an existing PostgreSQL installation."
  exit 0
fi

POSTGRES_VERSION="$(parse_postgresql_version "$@")"
readonly POSTGRES_VERSION
validate_postgresql_version "$POSTGRES_VERSION"
require_tools curl tar cmake
readonly PREFIX="${PREFIX:-$POSTGRES_ROOT/$POSTGRES_VERSION}"
readonly PG_CONFIG="$PREFIX/bin/pg_config"
require_postgresql_installation "$PREFIX"
reset_staging_dir "$STAGING_DIR"

readonly TIMESCALEDB_TAG="${TIMESCALEDB_TAG:-$(latest_tag "$TIMESCALEDB_REPOSITORY")}"
[[ -n "$TIMESCALEDB_TAG" ]] || die "could not determine the latest TimescaleDB release"
readonly TIMESCALEDB_DIR="$STAGING_DIR/timescaledb-${TIMESCALEDB_TAG#v}"

printf 'Building TimescaleDB %s\n' "$TIMESCALEDB_TAG"
download_source "$STAGING_DIR" "$TIMESCALEDB_REPOSITORY" "$TIMESCALEDB_TAG" \
  "timescaledb-${TIMESCALEDB_TAG#v}.tar.gz" "$TIMESCALEDB_DIR"
cd "$TIMESCALEDB_DIR"
./bootstrap \
  -DPG_CONFIG="$PG_CONFIG" \
  -DCMAKE_INSTALL_PREFIX="$PREFIX" \
  -DCMAKE_BUILD_TYPE=Release
cmake --build build --parallel "${JOBS:-$(nproc)}"
cmake --install build
test -x "$PREFIX/lib/timescaledb.so"

readonly SAVED_SOURCE_DIR="$(copy_install_source "$TIMESCALEDB_DIR" "$PREFIX" "timescaledb-$TIMESCALEDB_TAG")"
write_install_recipe "$SAVED_SOURCE_DIR" "$POSTGRES_VERSION" "$PREFIX" <<'RECIPE'
cd "$SCRIPT_DIR"

# Configure
rm -rf -- build
./bootstrap \
  -DPG_CONFIG="$PG_CONFIG" \
  -DCMAKE_INSTALL_PREFIX="$PREFIX" \
  -DCMAKE_BUILD_TYPE=Release

# Make
cmake --build build --parallel "$JOBS"

# Make install
cmake --install build
RECIPE