using Microsoft.AspNetCore.Mvc;
using TaskTracker.Core.DTOs;
using TaskTracker.Core.Entities;
using TaskTracker.Core.Interfaces;

namespace TaskTracker.Api.Controllers;

[ApiController]
[Route("api/[controller]")]
public class ContextController(
    IContextEventRepository contextRepo,
    IAppMappingRepository mappingRepo,
    ITaskRepository taskRepo,
    ILogger<ContextController> logger) : ControllerBase
{
    [HttpPost]
    public async Task<IActionResult> Ingest([FromBody] ContextEventRequest request)
    {
        // Try to auto-link to the active task
        var activeTask = await taskRepo.GetActiveTaskAsync();

        var contextEvent = new ContextEvent
        {
            Source = request.Source,
            AppName = request.AppName,
            WindowTitle = request.WindowTitle,
            Url = request.Url,
            WorkTaskId = activeTask?.Id
        };

        // Try to find a matching app mapping for category enrichment
        var mapping = await mappingRepo.FindMatchAsync(request.AppName, request.WindowTitle, request.Url);
        if (mapping is not null)
        {
            logger.LogDebug("Matched context event to category {Category} via {MatchType}",
                mapping.Category, mapping.MatchType);
        }

        var created = await contextRepo.CreateAsync(contextEvent);
        return Ok(ApiResponse<ContextEvent>.Ok(created));
    }

    [HttpGet("recent")]
    public async Task<IActionResult> GetRecent([FromQuery] int minutes = 30)
    {
        var events = await contextRepo.GetRecentAsync(minutes);
        return Ok(ApiResponse<List<ContextEvent>>.Ok(events));
    }

    [HttpGet("summary")]
    public async Task<IActionResult> GetSummary()
    {
        // Get today's events (last 8 hours)
        var events = await contextRepo.GetRecentAsync(480);
        var mappings = await mappingRepo.GetAllAsync();

        var summary = events
            .GroupBy(e => e.AppName)
            .Select(g =>
            {
                var match = mappings.FirstOrDefault(m => m.MatchType switch
                {
                    "ProcessName" => g.Key.Contains(m.Pattern, StringComparison.OrdinalIgnoreCase),
                    "TitleContains" => g.Any(e => e.WindowTitle.Contains(m.Pattern, StringComparison.OrdinalIgnoreCase)),
                    "UrlContains" => g.Any(e => e.Url?.Contains(m.Pattern, StringComparison.OrdinalIgnoreCase) == true),
                    _ => false
                });

                return new ContextSummaryItem
                {
                    AppName = match?.FriendlyName ?? g.Key,
                    Category = match?.Category ?? "Unknown",
                    EventCount = g.Count(),
                    FirstSeen = g.Min(e => e.Timestamp),
                    LastSeen = g.Max(e => e.Timestamp)
                };
            })
            .OrderByDescending(s => s.EventCount)
            .ToList();

        return Ok(ApiResponse<List<ContextSummaryItem>>.Ok(summary));
    }
}