import { Body, Controller, Get, Param, ParseUUIDPipe, Patch, Post, Query, Res } from '@nestjs/common';
import { ApiBearerAuth, ApiOperation, ApiTags } from '@nestjs/swagger';
import type { Response } from 'express';

import { BulkReceiveDto } from './dto/bulk-receive.dto';
import { BulkInspectDto } from './dto/bulk-inspect.dto';
import { DeliverInventoryDto } from './dto/deliver-inventory.dto';
import { FilterWarehouseInventoryDto } from './dto/filter-inventory.dto';
import { InquiryWarehouseInventoryDto } from './dto/inquiry-inventory.dto';
import { LoadInventoryDto } from './dto/load-inventory.dto';
import { MoveInventoryDto } from './dto/move-inventory.dto';
import { ReceiveWarehouseInventoryDto } from './dto/receive-inventory.dto';
import { ReleaseOrderDto } from './dto/release-order.dto';
import { ReserveInventoryDto } from './dto/reserve-inventory.dto';
import { UnloadBookingDto } from './dto/unload-booking.dto';
import { SchedulingReadFacade } from './scheduling-read.facade';
import { WarehouseInventoryService } from './warehouse-inventory.service';

@ApiTags('warehouse-inventory')
@ApiBearerAuth()
@Controller('warehouse-inventory')
export class WarehouseInventoryController {
  constructor(
    private readonly inventoryService: WarehouseInventoryService,
    private readonly scheduling: SchedulingReadFacade,
  ) {}

  @Get()
  @ApiOperation({ summary: 'List warehouse inventory' })
  findAll(@Query() filter: FilterWarehouseInventoryDto) {
    return this.inventoryService.findAll(filter);
  }

  @Get('ready-for-loading')
  @ApiOperation({ summary: 'List inventory ready for loading' })
  findReadyForLoading(@Query() filter: FilterWarehouseInventoryDto) {
    return this.inventoryService.findReadyForLoading(filter);
  }

  @Get('inquiry')
  @ApiOperation({ summary: 'Locate any item inside the warehouse' })
  inquiry(@Query() filter: InquiryWarehouseInventoryDto) {
    return this.inventoryService.inquiry(filter);
  }

  @Get('arrival-queue')
  @ApiOperation({ summary: 'Arrived bookings awaiting unload / inspection' })
  arrivalQueue() {
    return this.inventoryService.arrivalQueue();
  }

  @Post('auto-unload-arrived')
  @ApiOperation({ summary: 'Bulk auto-unload all arrived bookings into the warehouse' })
  autoUnloadArrived() {
    return this.inventoryService.autoUnloadArrived();
  }

  @Post('auto-load-ready')
  @ApiOperation({ summary: 'Auto-load READY_FOR_LOADING inventory with PAID bookings' })
  autoLoadReady() {
    return this.inventoryService.autoLoadReady();
  }

  @Get('eligible-bookings')
  @ApiOperation({ summary: 'PAID bookings not yet received, classified IMPORT/EXPORT by route; omit direction for all' })
  eligibleBookings(@Query('direction') direction?: string) {
    const dir = direction === 'IMPORT' || direction === 'EXPORT' ? direction : undefined;
    return this.inventoryService.eligibleBookings(dir);
  }

  @Post('receive-bulk')
  @ApiOperation({ summary: 'Bulk-receive selected eligible PAID bookings into a location' })
  receiveBulk(@Body() dto: BulkReceiveDto) {
    return this.inventoryService.bulkReceive(dto);
  }

  @Post('load-passed-export')
  @ApiOperation({ summary: 'Bulk-load all EXPORT inventory that passed inspection (READY_FOR_LOADING)' })
  loadPassedExport(@Body('performedBy') performedBy?: string) {
    return this.inventoryService.loadPassedExport(performedBy);
  }

  @Get('ready-to-load-export')
  @ApiOperation({ summary: 'EXPORT inventory that passed inspection and is READY_FOR_LOADING' })
  readyToLoadExport() {
    return this.inventoryService.readyToLoadExport();
  }

  @Get('loaded-export')
  @ApiOperation({ summary: 'EXPORT inventory that is LOADED and queued for dispatch' })
  loadedExport() {
    return this.inventoryService.loadedExport();
  }

  @Post('bulk-dispatch-export')
  @ApiOperation({ summary: 'Bulk-dispatch loaded EXPORT inventory (LOADED → DISPATCHED)' })
  bulkDispatchExport(@Body() dto: { inventoryIds: string[]; performedBy?: string }) {
    return this.inventoryService.bulkDispatchExport(dto.inventoryIds ?? [], dto.performedBy);
  }

  @Post('bulk-mark-inspected')
  @ApiOperation({ summary: 'Bulk mark received inventory inspection PASSED (EXPORT → READY_FOR_LOADING)' })
  bulkMarkInspected(@Body() dto: BulkInspectDto) {
    return this.inventoryService.bulkMarkInspected(dto);
  }

  @Post('bookings/:bookingId/unload')
  @ApiOperation({ summary: 'Unload a single arrived booking into a location' })
  unloadBooking(
    @Param('bookingId', ParseUUIDPipe) bookingId: string,
    @Body() dto: UnloadBookingDto,
  ) {
    return this.inventoryService.unloadBooking(bookingId, dto);
  }

  @Post(':id/gate-clearance')
  @ApiOperation({ summary: 'Final terminal release / gate clearance (blocked while fees unpaid)' })
  gateClearance(@Param('id', ParseUUIDPipe) id: string, @Body('performedBy') performedBy?: string) {
    return this.inventoryService.gateClearance(id, performedBy);
  }

  @Get('import/arrive-queue')
  @ApiOperation({ summary: 'Arrived IMPORT train schedules (route-derived), read-only from scheduling' })
  importArriveQueue() {
    return this.scheduling.importArriveQueue();
  }

  @Get('import/trains/:scheduleId/items')
  @ApiOperation({ summary: 'Assigned bookings/items for an arrived import train (read-only)' })
  importTrainDetail(@Param('scheduleId', ParseUUIDPipe) scheduleId: string) {
    return this.scheduling.importTrainDetail(scheduleId);
  }

  @Post('import/auto-unload-arrived-bookings')
  @ApiOperation({ summary: 'Unload all eligible assigned bookings of an ARRIVED import train (→ UNLOADED)' })
  autoUnloadArrivedBookings(@Body() dto: { scheduleId: string; performedBy?: string }) {
    return this.inventoryService.autoUnloadArrivedBookings(dto.scheduleId, dto.performedBy);
  }

  @Get('import/unloaded-queue')
  @ApiOperation({ summary: 'IMPORT inventory in the Unloaded Queue (UNLOADED / destination inspection)' })
  importUnloadedQueue() {
    return this.inventoryService.importUnloadedQueue();
  }

  @Get('import/pickup-ready-queue')
  @ApiOperation({ summary: 'IMPORT inventory that is PICKUP_READY (READY_FOR_PICKUP) awaiting pickup/dispatch' })
  importPickupReadyQueue() {
    return this.inventoryService.importPickupReadyQueue();
  }

  @Get('loadable-wagons')
  @ApiOperation({ summary: 'List wagons usable for loading (read-only from scheduling)' })
  loadableWagons() {
    return this.scheduling.listLoadableWagons();
  }

  @Get('booking/:bookingId/schedule')
  @ApiOperation({ summary: 'Read-only schedule + wagon + departure status for a booking' })
  bookingSchedule(@Param('bookingId', ParseUUIDPipe) bookingId: string) {
    return this.scheduling.getBookingSchedule(bookingId);
  }

  @Post('receive')
  @ApiOperation({ summary: 'Receive inventory at a warehouse location' })
  receive(@Body() dto: ReceiveWarehouseInventoryDto) {
    return this.inventoryService.receive(dto);
  }

  @Post('reserve')
  @ApiOperation({ summary: 'Reserve stored inventory for a PAID booking' })
  reserve(@Body() dto: ReserveInventoryDto) {
    return this.inventoryService.reserve(dto);
  }

  @Get(':id/movements')
  @ApiOperation({ summary: 'Inventory movement history' })
  movements(@Param('id', ParseUUIDPipe) id: string) {
    return this.inventoryService.findMovements(id);
  }

  @Get(':id/activity')
  @ApiOperation({ summary: 'Inventory activity log' })
  activity(@Param('id', ParseUUIDPipe) id: string) {
    return this.inventoryService.findActivity(id);
  }

  @Get(':id/loadings')
  @ApiOperation({ summary: 'Loading records for an inventory item' })
  loadings(@Param('id', ParseUUIDPipe) id: string) {
    return this.inventoryService.findLoadingsByInventory(id);
  }

  @Post(':id/move')
  @ApiOperation({ summary: 'Move inventory to another warehouse/yard/zone' })
  move(@Param('id', ParseUUIDPipe) id: string, @Body() dto: MoveInventoryDto) {
    return this.inventoryService.move(id, dto);
  }

  @Post(':id/store')
  @ApiOperation({ summary: 'Mark received inventory as STORED' })
  store(@Param('id', ParseUUIDPipe) id: string, @Body('performedBy') performedBy?: string) {
    return this.inventoryService.store(id, performedBy);
  }

  @Post(':id/ready-for-loading')
  @ApiOperation({ summary: 'Mark reserved inventory READY_FOR_LOADING' })
  readyForLoading(@Param('id', ParseUUIDPipe) id: string, @Body('performedBy') performedBy?: string) {
    return this.inventoryService.readyForLoading(id, performedBy);
  }

  @Post(':id/load')
  @ApiOperation({ summary: 'Load READY_FOR_LOADING inventory onto a wagon' })
  load(@Param('id', ParseUUIDPipe) id: string, @Body() dto: LoadInventoryDto) {
    return this.inventoryService.load(id, dto);
  }

  @Post(':id/ready-for-pickup')
  @ApiOperation({ summary: 'Mark inspected IMPORT inventory READY_FOR_PICKUP' })
  readyForPickup(@Param('id', ParseUUIDPipe) id: string, @Body('performedBy') performedBy?: string) {
    return this.inventoryService.readyForPickup(id, performedBy);
  }

  @Post(':id/release')
  @ApiOperation({ summary: 'Issue a DO / release order for ready-for-pickup inventory' })
  release(@Param('id', ParseUUIDPipe) id: string, @Body() dto: ReleaseOrderDto) {
    return this.inventoryService.release(id, dto);
  }

  @Get(':id/release-document')
  @ApiOperation({ summary: 'View warehouse release / exit paper PDF' })
  async releaseDocument(@Param('id', ParseUUIDPipe) id: string, @Res() res: Response) {
    const { filename, buffer } = await this.inventoryService.releaseDocument(id);
    res.setHeader('Content-Type', 'application/pdf');
    res.setHeader('Content-Disposition', `inline; filename="${filename}"`);
    res.setHeader('Content-Length', buffer.length);
    return res.send(buffer);
  }

  @Post(':id/deliver')
  @ApiOperation({ summary: 'Deliver import goods to the customer + capture proof of delivery' })
  deliver(@Param('id', ParseUUIDPipe) id: string, @Body() dto: DeliverInventoryDto) {
    return this.inventoryService.deliver(id, dto);
  }

  @Patch(':id/dispatch')
  @ApiOperation({ summary: 'Mark loaded inventory DISPATCHED (left the terminal)' })
  dispatch(@Param('id', ParseUUIDPipe) id: string, @Body('performedBy') performedBy?: string) {
    return this.inventoryService.dispatch(id, performedBy);
  }
}