#!/usr/bin/env bash
# Opens a PR from BRANCH into auto/driver-gaps, references the issue, sets ready/draft.
# Usage: open-pr.sh ISSUE_NUM BRANCH_NAME TITLE BODY_FILE
# Echoes the PR number on stdout.
set -euo pipefail
HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
. "$HERE/lib.sh"

ISSUE="${1:?}"; BRANCH="${2:?}"; TITLE="${3:?}"; BODY_FILE="${4:?}"

BODY=$(cat "$BODY_FILE")
PAYLOAD=$(python -c "
import json, sys
print(json.dumps({
    'title': sys.argv[1],
    'body':  sys.argv[2] + '\n\nCloses #' + sys.argv[3],
    'head':  sys.argv[4],
    'base':  sys.argv[5],
}))
" "$TITLE" "$BODY" "$ISSUE" "$BRANCH" "$INTEGRATION_BRANCH")

PR=$(api_repo POST pulls "$PAYLOAD")
PR_NUM=$(echo "$PR" | python -c "import sys,json; print(json.load(sys.stdin)['number'])")
echo "$PR_NUM"