using Microsoft.AspNetCore.Mvc;
using Nexus.Api.DTOs;

namespace Nexus.Api.Controllers;

[ApiController]
[Route("api/v1/calendar")]
public class CalendarController(IConfiguration config, IHttpClientFactory httpClientFactory, ILogger<CalendarController> logger) : ControllerBase
{
    [HttpGet]
    public async Task<IResult> GetAll(CancellationToken ct)
    {
        var gatewayToken = config["Integrations:OpenClaw:Token"] ?? "";

        try
        {
            var httpClient = httpClientFactory.CreateClient("gateway");
            if (!string.IsNullOrWhiteSpace(gatewayToken))
                httpClient.DefaultRequestHeaders.Authorization =
                    new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", gatewayToken);

            var response = await httpClient.GetAsync("/api/cron", ct);
            if (response.IsSuccessStatusCode)
            {
                var data = await response.Content.ReadFromJsonAsync<List<CronJobEntry>>(ct);
                return Results.Ok(data ?? new List<CronJobEntry>());
            }
        }
        catch (Exception ex)
        {
            logger.LogDebug(ex, "Gateway cron endpoint not reachable, using fallback data.");
        }

        var fallbackJobs = new List<object>
        {
            new { id = "health-check", name = "Health Check", schedule = "*/5 * * * *", lastRun = DateTimeOffset.UtcNow.AddMinutes(-3).ToString("O"), nextRun = DateTimeOffset.UtcNow.AddMinutes(2).ToString("O"), status = "completed" },
            new { id = "memory-sync", name = "Memory Sync", schedule = "0 */6 * * *", lastRun = DateTimeOffset.UtcNow.AddHours(-2).ToString("O"), nextRun = DateTimeOffset.UtcNow.AddHours(4).ToString("O"), status = "completed" },
            new { id = "task-cleanup", name = "Task Cleanup", schedule = "0 3 * * *", lastRun = DateTimeOffset.UtcNow.AddDays(-1).ToString("O"), nextRun = DateTimeOffset.UtcNow.AddDays(1).AddHours(3).ToString("O"), status = "completed" },
            new { id = "backup", name = "Database Backup", schedule = "0 4 * * *", lastRun = DateTimeOffset.UtcNow.AddDays(-1).AddHours(-1).ToString("O"), nextRun = DateTimeOffset.UtcNow.AddDays(1).AddHours(4).ToString("O"), status = "completed" },
            new { id = "model-routing-refresh", name = "Model Routing Refresh", schedule = "*/30 * * * *", lastRun = DateTimeOffset.UtcNow.AddMinutes(-12).ToString("O"), nextRun = DateTimeOffset.UtcNow.AddMinutes(18).ToString("O"), status = "running" },
        };
        return Results.Ok(fallbackJobs);
    }

    [HttpGet("upcoming")]
    public async Task<IResult> GetUpcoming(CancellationToken ct)
    {
        var gatewayToken = config["Integrations:OpenClaw:Token"] ?? "";

        try
        {
            var httpClient = httpClientFactory.CreateClient("gateway");
            if (!string.IsNullOrWhiteSpace(gatewayToken))
                httpClient.DefaultRequestHeaders.Authorization =
                    new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", gatewayToken);

            var response = await httpClient.GetAsync("/api/cron/upcoming", ct);
            if (response.IsSuccessStatusCode)
            {
                var data = await response.Content.ReadFromJsonAsync<List<UpcomingCronEntry>>(ct);
                return Results.Ok(data ?? new List<UpcomingCronEntry>());
            }
        }
        catch (Exception ex)
        {
            logger.LogDebug(ex, "Gateway upcoming cron endpoint not reachable, using fallback data.");
        }

        var now = DateTimeOffset.UtcNow;
        var fallback = new List<object>
        {
            new { id = "health-check", name = "Health Check", nextRun = now.AddMinutes(2).ToString("O"), schedule = "*/5 * * * *" },
            new { id = "model-routing-refresh", name = "Model Routing Refresh", nextRun = now.AddMinutes(18).ToString("O"), schedule = "*/30 * * * *" },
            new { id = "memory-sync", name = "Memory Sync", nextRun = now.AddHours(4).ToString("O"), schedule = "0 */6 * * *" },
            new { id = "task-cleanup", name = "Task Cleanup", nextRun = now.AddDays(1).AddHours(3).ToString("O"), schedule = "0 3 * * *" },
            new { id = "backup", name = "Database Backup", nextRun = now.AddDays(1).AddHours(4).ToString("O"), schedule = "0 4 * * *" },
        };
        return Results.Ok(fallback);
    }
}