using System.Text.Json;
using System.Text.Json.Nodes;
using Alchegos.Core.Services.RabbitMQ;

namespace Alchegos.Gitea.Webhook.Handlers;

public class PullRequestEventHandler : IGiteaEventHandler
{
    public async Task HandleAsync(JsonNode payload, IRabbitPublisher publisher)
    {
        string action = payload["action"]?.ToString() ?? "";
        string repo_url = payload["repository"]?["url"]?.ToString();
        string repo_owner = payload["repository"]?["owner"]?["login"]?.ToString();
        string repo_name = payload["repository"]?["name"]?.ToString();
        string branch = payload["pull_request"]?["head"]?["ref"]?.ToString();

        JsonArray labels = payload["pull_request"]?["labels"]?.AsArray() ?? new JsonArray();
        
        Dictionary<string, string> routingKeys = new Dictionary<string, string>
        {
            {"status/pending_review", "pull_request_pending_review"},
            {"status/pending_test", "pull_request_pending_test"}
        };

        if (action is "opened" or "label_updated")
        {
            foreach (JsonNode label in labels)
            {
                string labelName = label["name"]?.ToString().Trim() ?? label.ToString().Trim();
                if (routingKeys.TryGetValue(labelName, out string routingKey))
                {
                    Dictionary<string, string> message = new Dictionary<string, string>
                    {
                        {"repo_url", repo_url},
                        {"repo_owner", repo_owner},
                        {"repo_name", repo_name},
                        {"branch", branch}
                    };
                    await publisher.PublishAsync(
                        exchange: "alchegos",
                        routingKey: routingKey,
                        message: JsonSerializer.Serialize(message)
                    );
                    break;
                }
            }
        }
    }
}