package com.auction;

import jakarta.inject.Inject;
import jakarta.ws.rs.*;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.Response;
import org.jboss.logging.Logger;

import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

/**
 * REST API for Auction Monitor control and status.
 * Provides endpoints for:
 * - Status checking
 * - Manual workflow triggers
 * - Statistics
 */
@Path("/api/monitor")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public class AuctionMonitorResource {

    private static final Logger LOG = Logger.getLogger(AuctionMonitorResource.class);

    @Inject
    DatabaseService db;

    @Inject
    QuarkusWorkflowScheduler scheduler;

    @Inject
    NotificationService notifier;

    /**
     * GET /api/monitor/status
     * Returns current monitoring status
     */
    @GET
    @Path("/status")
    public Response getStatus() {
        try {
            Map<String, Object> status = new HashMap<>();
            status.put("running", true);
            status.put("auctions", db.getAllAuctions().size());
            status.put("lots", db.getAllLots().size());
            status.put("images", db.getImageCount());

            // Count closing soon
            int closingSoon = 0;
            for (var lot : db.getAllLots()) {
                if (lot.closingTime() != null && lot.minutesUntilClose() < 30) {
                    closingSoon++;
                }
            }
            status.put("closingSoon", closingSoon);

            return Response.ok(status).build();

        } catch (Exception e) {
            LOG.error("Failed to get status", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * GET /api/monitor/statistics
     * Returns detailed statistics
     */
    @GET
    @Path("/statistics")
    public Response getStatistics() {
        try {
            Map<String, Object> stats = new HashMap<>();

            var auctions = db.getAllAuctions();
            var lots = db.getAllLots();

            stats.put("totalAuctions", auctions.size());
            stats.put("totalLots", lots.size());
            stats.put("totalImages", db.getImageCount());

            // Lot statistics
            int activeLots = 0;
            int lotsWithBids = 0;
            double totalBids = 0;

            for (var lot : lots) {
                if (lot.closingTime() != null && lot.minutesUntilClose() > 0) {
                    activeLots++;
                }
                if (lot.currentBid() > 0) {
                    lotsWithBids++;
                    totalBids += lot.currentBid();
                }
            }

            stats.put("activeLots", activeLots);
            stats.put("lotsWithBids", lotsWithBids);
            stats.put("totalBidValue", String.format("€%.2f", totalBids));
            stats.put("averageBid", lotsWithBids > 0 ? String.format("€%.2f", totalBids / lotsWithBids) : "€0.00");

            return Response.ok(stats).build();

        } catch (Exception e) {
            LOG.error("Failed to get statistics", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * POST /api/monitor/trigger/scraper-import
     * Manually trigger scraper import workflow
     */
    @POST
    @Path("/trigger/scraper-import")
    public Response triggerScraperImport() {
        try {
            scheduler.importScraperData();
            return Response.ok(Map.of("message", "Scraper import triggered successfully")).build();
        } catch (Exception e) {
            LOG.error("Failed to trigger scraper import", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * POST /api/monitor/trigger/image-processing
     * Manually trigger image processing workflow
     */
    @POST
    @Path("/trigger/image-processing")
    public Response triggerImageProcessing() {
        try {
            scheduler.processImages();
            return Response.ok(Map.of("message", "Image processing triggered successfully")).build();
        } catch (Exception e) {
            LOG.error("Failed to trigger image processing", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * POST /api/monitor/trigger/bid-monitoring
     * Manually trigger bid monitoring workflow
     */
    @POST
    @Path("/trigger/bid-monitoring")
    public Response triggerBidMonitoring() {
        try {
            scheduler.monitorBids();
            return Response.ok(Map.of("message", "Bid monitoring triggered successfully")).build();
        } catch (Exception e) {
            LOG.error("Failed to trigger bid monitoring", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * POST /api/monitor/trigger/closing-alerts
     * Manually trigger closing alerts workflow
     */
    @POST
    @Path("/trigger/closing-alerts")
    public Response triggerClosingAlerts() {
        try {
            scheduler.checkClosingTimes();
            return Response.ok(Map.of("message", "Closing alerts triggered successfully")).build();
        } catch (Exception e) {
            LOG.error("Failed to trigger closing alerts", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * GET /api/monitor/auctions
     * Returns list of all auctions
     */
    @GET
    @Path("/auctions")
    public Response getAuctions(@QueryParam("country") String country) {
        try {
            var auctions = country != null && !country.isEmpty()
                ? db.getAuctionsByCountry(country)
                : db.getAllAuctions();

            return Response.ok(auctions).build();
        } catch (Exception e) {
            LOG.error("Failed to get auctions", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * GET /api/monitor/lots
     * Returns list of active lots
     */
    @GET
    @Path("/lots")
    public Response getActiveLots() {
        try {
            var lots = db.getActiveLots();
            return Response.ok(lots).build();
        } catch (Exception e) {
            LOG.error("Failed to get lots", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * GET /api/monitor/lots/closing-soon
     * Returns lots closing within specified minutes (default 30)
     */
    @GET
    @Path("/lots/closing-soon")
    public Response getLotsClosingSoon(@QueryParam("minutes") @DefaultValue("30") int minutes) {
        try {
            var allLots = db.getActiveLots();
            var closingSoon = allLots.stream()
                .filter(lot -> lot.closingTime() != null && lot.minutesUntilClose() < minutes)
                .toList();

            return Response.ok(closingSoon).build();
        } catch (Exception e) {
            LOG.error("Failed to get closing lots", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * GET /api/monitor/lots/{lotId}/images
     * Returns images for a specific lot
     */
    @GET
    @Path("/lots/{lotId}/images")
    public Response getLotImages(@PathParam("lotId") int lotId) {
        try {
            var images = db.getImagesForLot(lotId);
            return Response.ok(images).build();
        } catch (Exception e) {
            LOG.error("Failed to get lot images", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }

    /**
     * POST /api/monitor/test-notification
     * Send a test notification
     */
    @POST
    @Path("/test-notification")
    public Response sendTestNotification(Map<String, String> request) {
        try {
            String message = request.getOrDefault("message", "Test notification from Auction Monitor");
            String title = request.getOrDefault("title", "Test Notification");
            int priority = Integer.parseInt(request.getOrDefault("priority", "0"));

            notifier.sendNotification(message, title, priority);

            return Response.ok(Map.of("message", "Test notification sent successfully")).build();
        } catch (Exception e) {
            LOG.error("Failed to send test notification", e);
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
                .entity(Map.of("error", e.getMessage()))
                .build();
        }
    }
}