package com.baiyue.lastleg.controller;

import com.baiyue.common.core.api.ApiResponse;
import com.baiyue.common.core.api.PageResult;
import com.baiyue.common.event.EventEnvelope;
import com.baiyue.common.security.AuthenticatedUser;
import com.baiyue.lastleg.dto.LastlegOrderDetailResponse;
import com.baiyue.lastleg.dto.LastlegOrderRequests;
import com.baiyue.lastleg.dto.LastlegOrderSummary;
import com.baiyue.lastleg.dto.LastlegOrderCommandDtos;
import com.baiyue.lastleg.dto.ContainerPlanProgressDetail;
import com.baiyue.lastleg.dto.ContainerPlanProgressSummary;
import com.baiyue.lastleg.entity.LastlegOrderFee;
import com.baiyue.lastleg.security.InternalServiceTokenGuard;
import com.baiyue.lastleg.security.OverseasPermissions;
import com.baiyue.lastleg.service.LastlegOrderService;
import com.baiyue.lastleg.service.LastlegOrderCommandService;
import com.baiyue.lastleg.service.LoadingCompletedConsumer;
import com.baiyue.lastleg.shipping.service.ContainerShippingNodeConsumer;
import com.baiyue.common.event.EventTypes;
import com.baiyue.lastleg.wallet.WalletCommandCompletedConsumer;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.validation.Valid;
import jakarta.annotation.Resource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.server.ResponseStatusException;

import java.nio.charset.StandardCharsets;

@RestController
@Tag(name = "Tail-leg orders")
public class LastlegOrderController {
    @Resource private LoadingCompletedConsumer consumer;
    @Resource private ContainerShippingNodeConsumer shippingNodeConsumer;
    @Resource private LastlegOrderService orderService;
    @Resource private LastlegOrderCommandService commandService;
    @Resource private InternalServiceTokenGuard tokenGuard;
    @Resource private WalletCommandCompletedConsumer walletCommandCompletedConsumer;

    @PostMapping("/internal/lastleg/events")
    @Operation(summary = "Receive a first-leg loading or actual shipping-node event",
        description = "Accepts loading-completed V1/V2 and FirstLegContainerShippingNodeRecorded V1 through the internal token boundary; only monotonic actual PICKUP_READY-or-later facts open overseas PDA receiving.")
    public ApiResponse<Integer> receive(
        @RequestHeader(value = "X-Internal-Service-Token", required = false) String token,
        @RequestBody EventEnvelope event) {
        tokenGuard.verify(token);
        int consumed;
        if (EventTypes.FIRST_LEG_CONTAINER_SHIPPING_NODE_RECORDED.equals(event.eventType())) {
            consumed = shippingNodeConsumer.consume(event);
        } else if (EventTypes.WALLET_COMMAND_COMPLETED.equals(event.eventType())) {
            consumed = walletCommandCompletedConsumer.consume(event);
        } else if (EventTypes.FIRST_LEG_LOADING_PLAN_COMPLETED.equals(event.eventType())) {
            consumed = consumer.consume(event);
        } else {
            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Lastleg 不消费该事件类型: " + event.eventType());
        }
        return ApiResponse.success(consumed);
    }

    @GetMapping("/api/platform/v1/last-leg/orders")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_LIST + "')")
    @Operation(summary = "Page tail-leg order rows", description = "Required authority: " + OverseasPermissions.LAST_MILE_ORDER_LIST)
    public ApiResponse<PageResult<LastlegOrderSummary>> list(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @Valid LastlegOrderRequests.Query query) {
        return ApiResponse.success(orderService.page(platformScope(user, customerId), query));
    }

    @GetMapping("/api/platform/v1/last-leg/orders/container-summaries")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_LIST + "')")
    @Operation(summary = "分页查询待分配柜级摘要",
        description = "按稳定 sourceContainerBookingId 聚合待分配尾程订单；平台跨客户查询。Required authority: "
            + OverseasPermissions.LAST_MILE_ORDER_LIST)
    public ApiResponse<PageResult<ContainerPlanProgressSummary>> containerSummaries(
        @AuthenticationPrincipal AuthenticatedUser user,
        @Valid LastlegOrderRequests.ContainerProgressQuery query) {
        platformScope(user, null);
        return ApiResponse.success(orderService.containerProgressPage(query));
    }

    @GetMapping("/api/platform/v1/last-leg/orders/container-summaries/{sourceContainerBookingId}")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_LIST + "')")
    @Operation(summary = "查询柜级入库计划进度详情",
        description = "按稳定 sourceContainerBookingId 返回柜内全部尾程订单、入仓码及各自计划状态，不受订单分页影响。Required authority: "
            + OverseasPermissions.LAST_MILE_ORDER_LIST)
    public ApiResponse<ContainerPlanProgressDetail> containerSummaryDetail(
        @AuthenticationPrincipal AuthenticatedUser user,
        @PathVariable String sourceContainerBookingId) {
        platformScope(user, null);
        return ApiResponse.success(orderService.containerProgressDetail(sourceContainerBookingId));
    }

    @PutMapping("/api/platform/v1/last-leg/orders/container-summaries/{sourceContainerBookingId}/receiving-warehouse")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "修改整柜海外接柜仓",
        description = "仅在海外PDA建立接柜会话前允许修改；按 expectedVersion 乐观锁原子同步柜内订单与入库计划。")
    public ApiResponse<ContainerPlanProgressSummary> changeReceivingWarehouse(
        @AuthenticationPrincipal AuthenticatedUser user,
        @PathVariable String sourceContainerBookingId,
        @RequestHeader("Idempotency-Key") String idempotencyKey,
        @Valid @RequestBody LastlegOrderRequests.ChangeReceivingWarehouse request) {
        platformScope(user, null);
        return ApiResponse.success(orderService.changeReceivingWarehouse(sourceContainerBookingId,
            idempotencyKey, request, operatorName(user)));
    }

    @GetMapping("/api/platform/v1/last-leg/orders/{id}")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_LIST + "')")
    @Operation(summary = "Get one inbound-code-level tail-leg order", description = "Required authority: " + OverseasPermissions.LAST_MILE_ORDER_LIST)
    public ApiResponse<LastlegOrderDetailResponse> detail(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @PathVariable long id) {
        return ApiResponse.success(orderService.detail(platformScope(user, customerId), id));
    }

    @PostMapping("/api/platform/v1/last-leg/orders/{id}/fees")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "Add a fee to one tail-leg order", description = "Required authority: " + OverseasPermissions.LAST_MILE_ORDER_EDIT)
    public ApiResponse<LastlegOrderFee> createFee(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @PathVariable long id,
        @Valid @RequestBody LastlegOrderRequests.CreateFee request) {
        return ApiResponse.success(orderService.createFee(platformScope(user, customerId), id, request, operatorName(user)));
    }

    @PutMapping("/api/platform/v1/last-leg/orders/{id}/hold")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "暂扣或解除单票尾程订单",
        description = "要求版本与幂等键；暂扣只作用于该票并阻断其出库推进。Required authority: " + OverseasPermissions.LAST_MILE_ORDER_EDIT)
    public ApiResponse<LastlegOrderCommandDtos.HoldResponse> hold(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @PathVariable long id,
        @RequestHeader("Idempotency-Key") String idempotencyKey,
        @Valid @RequestBody LastlegOrderCommandDtos.HoldRequest request) {
        return ApiResponse.success(commandService.hold(platformScope(user, customerId), id, idempotencyKey,
            request, operatorId(user), operatorName(user)));
    }

    @PutMapping("/api/platform/v1/last-leg/orders/{id}/manual-nodes")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "保存单票人工节点覆盖",
        description = "首次保存后该票永久使用 MANUAL 节点，不再回退柜级节点；当前无清除或恢复继承接口。Required authority: " + OverseasPermissions.LAST_MILE_ORDER_EDIT)
    public ApiResponse<LastlegOrderCommandDtos.ManualNodesResponse> saveManualNodes(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @PathVariable long id,
        @RequestHeader("Idempotency-Key") String idempotencyKey,
        @Valid @RequestBody LastlegOrderCommandDtos.ManualNodesRequest request) {
        return ApiResponse.success(commandService.saveManualNodes(platformScope(user, customerId), id,
            idempotencyKey, request, operatorId(user), operatorName(user)));
    }

    @GetMapping("/api/platform/v1/last-leg/orders/{id}/manual-nodes")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_LIST + "')")
    @Operation(summary = "查询单票人工节点覆盖",
        description = "只返回人工填写节点及 MANUAL 来源。Required authority: " + OverseasPermissions.LAST_MILE_ORDER_LIST)
    public ApiResponse<LastlegOrderCommandDtos.ManualNodesResponse> manualNodes(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @PathVariable long id) {
        return ApiResponse.success(commandService.manualNodes(platformScope(user, customerId), id));
    }

    @PutMapping("/api/platform/v1/last-leg/orders/{id}/pallet-merge-required")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "Set the PDA pallet-merge reminder for one tail-leg order",
        description = "Required authority: " + OverseasPermissions.LAST_MILE_ORDER_EDIT)
    public ApiResponse<Void> setPalletMergeRequired(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @PathVariable long id,
        @Valid @RequestBody LastlegOrderRequests.SetPalletMergeRequired request) {
        orderService.setPalletMergeRequired(platformScope(user, customerId), id, request, operatorName(user));
        return ApiResponse.success(null);
    }

    @PutMapping("/api/platform/v1/last-leg/orders/pallet-merge-required/batch")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "Mark a selected tail-leg order group for PDA pallet merge")
    public ApiResponse<Void> setPalletMergeBatch(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @Valid @RequestBody LastlegOrderRequests.SetPalletMergeBatch request) {
        orderService.setPalletMergeBatch(platformScope(user, customerId), request, operatorName(user));
        return ApiResponse.success(null);
    }

    @GetMapping(value = "/api/platform/v1/last-leg/orders/export", produces = "text/csv")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EXPORT + "')")
    @Operation(summary = "Export filtered tail-leg orders as UTF-8 CSV", description = "Required authority: " + OverseasPermissions.LAST_MILE_ORDER_EXPORT)
    public ResponseEntity<byte[]> export(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @Valid LastlegOrderRequests.Query query) {
        byte[] body = orderService.exportCsv(platformScope(user, customerId), query);
        return ResponseEntity.ok()
            .contentType(new MediaType("text", "csv", StandardCharsets.UTF_8))
            .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=lastleg-orders.csv")
            .body(body);
    }

    @PutMapping("/api/platform/v1/last-leg/orders/{id}/destination")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "将单票尾程订单转入 FBA 目的仓",
        description = "目标仓必须来自国内 Warehouse Service 的平台公共 ACTIVE FBA 主档，ID/编码/名称必须一致。Required authority: "
            + OverseasPermissions.LAST_MILE_ORDER_EDIT)
    public ApiResponse<Integer> transferOne(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @PathVariable long id,
        @Valid @RequestBody LastlegOrderRequests.SingleTransferDestination request) {
        return ApiResponse.success(orderService.transferDestination(platformScope(user, customerId), request.withOrderId(id)));
    }

    @PutMapping("/api/platform/v1/last-leg/orders/destination")
    @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EDIT + "')")
    @Operation(summary = "批量将尾程订单转入 FBA 目的仓",
        description = "目标仓必须来自国内 Warehouse Service 的平台公共 ACTIVE FBA 主档，ID/编码/名称必须一致。Required authority: "
            + OverseasPermissions.LAST_MILE_ORDER_EDIT)
    public ApiResponse<Integer> transferBatch(
        @AuthenticationPrincipal AuthenticatedUser user,
        @RequestParam(required = false) String customerId,
        @Valid @RequestBody LastlegOrderRequests.TransferDestination request) {
        return ApiResponse.success(orderService.transferDestination(platformScope(user, customerId), request));
    }

    private String platformScope(AuthenticatedUser user, String requestedCustomer) {
        if (user == null || user.tenantId() == null) {
            throw new ResponseStatusException(HttpStatus.UNAUTHORIZED);
        }
        if (!"PLATFORM".equals(user.appCode()) || user.tenantId() != 0L) {
            throw new ResponseStatusException(HttpStatus.FORBIDDEN, "Platform identity is required");
        }
        return requestedCustomer == null || requestedCustomer.isBlank() || "0".equals(requestedCustomer)
            ? null : requestedCustomer.trim();
    }

    private String operatorName(AuthenticatedUser user) {
        return user.username() == null || user.username().isBlank() ? String.valueOf(user.userId()) : user.username();
    }

    private String operatorId(AuthenticatedUser user) {
        return user.userId() == null ? operatorName(user) : String.valueOf(user.userId());
    }
}