#!/usr/bin/env bash
#
# pipeline-trigger.sh — Trigger a Woodpecker CI pipeline
#
# Usage: pipeline-trigger.sh [-r owner/repo] [-b branch] [-a instance]
#
# Options:
#   -r repo       Repository in owner/repo format (default: current repo)
#   -b branch     Branch to build (default: main)
#   -a instance   Woodpecker instance name (e.g. usc, mosaic)
#   -h            Show this help
#
# Requires: woodpecker credentials in credentials.json
set -euo pipefail

MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
source "$MOSAIC_HOME/tools/_lib/credentials.sh"
source "$(dirname "${BASH_SOURCE[0]}")/_lib.sh"

REPO=""
BRANCH="main"
WP_INSTANCE=""

while getopts "r:b:a:h" opt; do
  case $opt in
    r) REPO="$OPTARG" ;;
    b) BRANCH="$OPTARG" ;;
    a) WP_INSTANCE="$OPTARG" ;;
    h) head -14 "$0" | grep "^#" | sed 's/^# \?//'; exit 0 ;;
    *) echo "Usage: $0 [-r owner/repo] [-b branch] [-a instance]" >&2; exit 1 ;;
  esac
done

if [[ -n "$WP_INSTANCE" ]]; then
  load_credentials "woodpecker-${WP_INSTANCE}"
else
  load_credentials woodpecker
fi

if [[ -z "$REPO" ]]; then
  REPO=$(wp_detect_repo) || exit 1
fi

# Resolve owner/repo to numeric ID (Woodpecker v3 API)
REPO_ID=$(wp_resolve_repo_id "$REPO") || exit 1

echo "Triggering pipeline for $REPO on branch $BRANCH..."

response=$(curl -sk -w "\n%{http_code}" -X POST \
  -H "Authorization: Bearer $WOODPECKER_TOKEN" \
  -H "Content-Type: application/json" \
  -d "$(jq -n --arg b "$BRANCH" '{branch: $b}')" \
  "${WOODPECKER_URL}/api/repos/${REPO_ID}/pipelines")

http_code=$(echo "$response" | tail -n1)
body=$(echo "$response" | sed '$d')

if [[ "$http_code" != "200" && "$http_code" != "201" ]]; then
  echo "Error: Failed to trigger pipeline (HTTP $http_code)" >&2
  echo "$body" | jq -r '.' 2>/dev/null >&2 || echo "$body" >&2
  exit 1
fi

number=$(echo "$body" | jq -r '.number')
echo "Pipeline #$number triggered successfully"