#!/bin/bash
# Simple webhook receiver for Gitea
# Listens on port 9110 and triggers deploy.sh when called
#
# Usage: ./webhook-receiver.sh
# Test: curl -X POST http://127.0.0.1:9110/deploy

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
DEPLOY_DIR="$(dirname "$SCRIPT_DIR")"
DEPLOY_SCRIPT="$DEPLOY_DIR/deploy.sh"
LOG_FILE="$SCRIPT_DIR/webhook.log"
PORT="${WEBHOOK_PORT:-9110}"
SECRET="${WEBHOOK_SECRET:-}"

log() {
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
}

log "Webhook receiver starting on port $PORT..."

while true; do
    # Listen for incoming HTTP requests using netcat
    REQUEST=$(nc -l -p "$PORT" -q 1 2>/dev/null || nc -l "$PORT" 2>/dev/null)

    # Parse the request
    FIRST_LINE=$(echo "$REQUEST" | head -1)
    METHOD=$(echo "$FIRST_LINE" | awk '{print $1}')
    PATH=$(echo "$FIRST_LINE" | awk '{print $2}')

    # Extract branch from payload (simple grep for "testing" branch)
    if echo "$REQUEST" | grep -q '"ref".*"refs/heads/testing"'; then
        BRANCH_MATCH="true"
    else
        BRANCH_MATCH="false"
    fi

    log "Received: $METHOD $PATH (testing branch: $BRANCH_MATCH)"

    # Handle deploy endpoint
    if [[ "$PATH" == "/deploy"* ]] && [[ "$METHOD" == "POST" ]]; then
        if [[ "$BRANCH_MATCH" == "true" ]] || [[ "$PATH" == "/deploy?force=true" ]] || [[ -z "$REQUEST" ]]; then
            log "Triggering deployment..."

            # Run deploy in background and capture output
            cd "$DEPLOY_DIR"
            DEPLOY_OUTPUT=$("$DEPLOY_SCRIPT" 2>&1)
            DEPLOY_EXIT=$?

            log "Deploy exit code: $DEPLOY_EXIT"
            echo "$DEPLOY_OUTPUT" >> "$LOG_FILE"

            if [ $DEPLOY_EXIT -eq 0 ]; then
                RESPONSE="HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nConnection: close\r\n\r\n{\"status\":\"success\",\"message\":\"Deployment triggered\"}"
            else
                RESPONSE="HTTP/1.1 500 Internal Server Error\r\nContent-Type: application/json\r\nConnection: close\r\n\r\n{\"status\":\"error\",\"message\":\"Deployment failed\"}"
            fi
        else
            log "Skipping - not testing branch"
            RESPONSE="HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nConnection: close\r\n\r\n{\"status\":\"skipped\",\"message\":\"Not testing branch\"}"
        fi
    elif [[ "$PATH" == "/health" ]]; then
        RESPONSE="HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\nOK"
    else
        RESPONSE="HTTP/1.1 404 Not Found\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\nNot Found"
    fi

    echo -e "$RESPONSE"
done