#!/usr/bin/env bash
# Required env vars: GITEA_TOKEN, GITEA_SERVER_URL, REPO, PR_NUMBER, REVIEW, CURRENT_SHA
# Optional env vars: TRUNCATED, INCREMENTAL
set -euo pipefail

FOOTER=""
if [ "${TRUNCATED:-}" = "true" ]; then
  FOOTER="\n\n> **Note:** The diff was truncated to 12 KB. Some changes may not have been reviewed."
fi

LABEL="## AI Code Review"
if [ "${INCREMENTAL:-false}" = "true" ]; then
  LABEL="## AI Code Review (updated)"
fi

# Embed the current SHA as a hidden marker so future runs can find it
BODY=$(jq -n \
  --arg heading "$LABEL" \
  --arg review "$REVIEW" \
  --arg footer "$FOOTER" \
  --arg sha "$CURRENT_SHA" \
  '{ body: ($heading + "\n\n" + $review + $footer + "\n\n---\n*Automated review powered by AI. Always verify suggestions before applying.*\n<!-- ai-review-sha:" + $sha + " -->") }')

curl -sf \
  -X POST \
  -H "Authorization: token ${GITEA_TOKEN}" \
  -H "Content-Type: application/json" \
  -d "$BODY" \
  "${GITEA_SERVER_URL}/api/v1/repos/${REPO}/issues/${PR_NUMBER}/comments"