package com.yykj.sjnmtybt.controller;

import com.yykj.sjnmtybt.common.ApiResponse;
import com.yykj.sjnmtybt.common.PageResult;
import com.yykj.sjnmtybt.dto.request.ApproveRequest;
import com.yykj.sjnmtybt.dto.request.SpecialBizCreateRequest;
import com.yykj.sjnmtybt.dto.response.SpecialBizVO;
import com.yykj.sjnmtybt.enums.RefundProgressStageEnum;
import com.yykj.sjnmtybt.enums.SpecialBizTypeEnum;
import com.yykj.sjnmtybt.service.BizFlowService;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.Map;

@Tag(name = "06-特殊业务", description = "流程图泳道：特殊业务申请（死亡预警/暂停恢复补发/调标）")
@RestController
@RequestMapping("/api/special-biz")
public class SpecialBizController {

    private final BizFlowService flow;

    public SpecialBizController(BizFlowService flow) {
        this.flow = flow;
    }

    @Operation(summary = "分页查询特殊业务",
            description = "含丧葬、暂停、停止、恢复、调标差额补发、下月补发、多发退款、继承人变更等。"
                    + "调标单人员可为空，对象列为街镇；关联村批见 relatedBatchIds。")
    @GetMapping("/page")
    public ApiResponse<PageResult<SpecialBizVO>> page(
            @Parameter(description = "关联统一批次号") @RequestParam(required = false) String batchNo,
            @Parameter(description = "业务类型") @RequestParam(required = false) SpecialBizTypeEnum bizType,
            @Parameter(description = "审批状态：待分管领导审批/已通过/已驳回") @RequestParam(required = false) String approveStatus,
            @Parameter(description = "街镇ID") @RequestParam(required = false) String townId,
            @Parameter(description = "页码，从 1 起") @RequestParam(required = false, defaultValue = "1") Integer pageNum,
            @Parameter(description = "每页条数") @RequestParam(required = false, defaultValue = "20") Integer pageSize) {
        return ApiResponse.ok(flow.pageSpecial(bizType, approveStatus, pageNum, pageSize, townId));
    }

    @Operation(summary = "恢复发放补发预览",
            description = "按暂停月数×街镇月标估算补发金额与默认原因；创建 RESUME 前可调用。")
    @GetMapping("/resume-preview")
    public ApiResponse<Map<String, Object>> resumePreview(
            @Parameter(description = "人员ID", required = true) @RequestParam String personnelId) {
        return ApiResponse.ok(flow.previewResumeSupplement(personnelId));
    }

    @Operation(summary = "创建特殊业务（线上申请）",
            description = "丧葬/暂停/恢复等需选人。"
                    + "STANDARD_ADJUST 调标差额补发：只传 townId（必填），可选 reason/fileUrls；"
                    + "新旧土地标准与生效月从金额标准历史自动带出，不再手填；"
                    + "按村生成业务号 YYYY99 补发批，进分管领导审批（审批以村批为准，非本单出盘）。")
    @PostMapping
    public ApiResponse<SpecialBizVO> create(@Validated @RequestBody SpecialBizCreateRequest req) {
        return ApiResponse.ok("特殊业务已创建，待分管领导审批", flow.createSpecial(req));
    }

    @Operation(summary = "分管领导线上审批特殊业务",
            description = "通过→业务部门可生成特殊业务出盘文件；驳回→退回业务部门修改。"
                    + "调标差额补发的实质审批请走 POST /api/batches/leader-approve（各村补发批）。")
    @PostMapping("/leader-approve")
    public ApiResponse<SpecialBizVO> leaderApprove(@Validated @RequestBody ApproveRequest req) {
        return ApiResponse.ok("审批完成", flow.approveSpecial(req));
    }

    @Operation(summary = "生成特殊业务出盘文件",
            description = "分管领导审批通过后，业务部门导出出盘文件，进入线下签批与财政发放。"
                    + "调标补发请用发放出盘接口且 adjustOnly=true；未通过/已出盘/调标单会返回 400。")
    @PostMapping("/{id}/export-disk")
    public ApiResponse<Map<String, String>> exportDisk(
            @Parameter(description = "特殊业务单ID", required = true) @PathVariable String id) {
        return ApiResponse.ok("特殊业务出盘文件已生成", flow.exportSpecialDisk(id));
    }

    @Operation(summary = "推进退款进度")
    @PostMapping("/{id}/refund-progress")
    public ApiResponse<SpecialBizVO> advanceRefundProgress(
            @PathVariable String id,
            @RequestBody Map<String, String> body) {
        RefundProgressStageEnum stage = RefundProgressStageEnum.valueOf(body.get("stage"));
        return ApiResponse.ok("进度已更新", flow.advanceRefundProgress(id, stage));
    }

    @Operation(summary = "退款进度统计")
    @GetMapping("/refund-stats")
    public ApiResponse<Map<String, Object>> refundStats() {
        return ApiResponse.ok(flow.refundStats());
    }
}