package com.trafficaudit.observation.controller;

import com.trafficaudit.common.Result;
import com.trafficaudit.observation.dto.ObservationDateSummary;
import com.trafficaudit.observation.entity.ObservationStationFlow;
import com.trafficaudit.observation.service.ObservationStationImportService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.time.LocalDate;
import java.util.List;
import java.util.Map;

/**
 * Observation station raw data. Collected and stored only; not linked to holiday flow data.
 */
@Slf4j
@RestController
@RequestMapping("/api/observation")
public class ObservationStationController {

    @Resource
    private ObservationStationImportService importService;

    @PostMapping("/import")
    public Result<Map<String, Object>> importWorkbook(@RequestParam("file") MultipartFile file) {
        try {
            return Result.ok(importService.importWorkbook(file));
        } catch (Exception e) {
            log.error("observation station import error", e);
            return Result.error(400, e.getMessage());
        }
    }

    @GetMapping("/dates")
    public Result<List<ObservationDateSummary>> dates() {
        return Result.ok(importService.listDateSummaries());
    }

    @GetMapping("/rows")
    public Result<List<ObservationStationFlow>> rows(@RequestParam(value = "date", required = false) String date,
                                                      @RequestParam(value = "limit", defaultValue = "2000") int limit) {
        try {
            LocalDate target = (date == null || date.trim().isEmpty()) ? null : LocalDate.parse(date);
            return Result.ok(importService.listRows(target, limit));
        } catch (Exception e) {
            return Result.error(400, e.getMessage());
        }
    }

    @PostMapping("/delete")
    public Result<Integer> delete(@RequestParam("date") String date) {
        try {
            return Result.ok(importService.deleteDate(LocalDate.parse(date)));
        } catch (Exception e) {
            return Result.error(400, e.getMessage());
        }
    }
}