#!/usr/bin/env bash
# Fetch a PR's diff and metadata for review.
#
#   scripts/review.sh 7            # print the diff
#   scripts/review.sh 7 --meta     # title, author, branch, CI state
#
# Requires GITEA_TOKEN.
set -euo pipefail

GITEA_URL="${GITEA_URL:-http://192.168.0.3:3000}"
OWNER="${GITEA_OWNER:-BBergle}"
REPO="${GITEA_REPO:-bike-app}"

[ -n "${GITEA_TOKEN:-}" ] || { echo "error: GITEA_TOKEN not set" >&2; exit 1; }
PR="${1:-}"
[ -n "$PR" ] || { echo "usage: scripts/review.sh <pr-number> [--meta]" >&2; exit 1; }

api() { curl -sS -H "Authorization: token $GITEA_TOKEN" "$GITEA_URL/api/v1/repos/$OWNER/$REPO/$1"; }

if [ "${2:-}" = "--meta" ]; then
  api "pulls/$PR" | jq '{number, title, user: .user.login, head: .head.ref, base: .base.ref,
                         mergeable, draft, additions, deletions, changed_files}'
  echo "--- commit status ---"
  SHA="$(api "pulls/$PR" | jq -r '.head.sha')"
  api "commits/$SHA/status" | jq '{state, statuses: [.statuses[]? | {context, state}]}'
else
  api "pulls/$PR.diff"
fi