package com.goi.erp.controller;

import com.goi.erp.entity.TankInventory;
import com.goi.erp.service.TankInventoryService;
import lombok.RequiredArgsConstructor;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.*;

import java.math.BigDecimal;
import java.security.Principal;
import java.util.UUID;

@RestController
@RequiredArgsConstructor
@RequestMapping("/tank/inventory")
public class TankInventoryController {

    private final TankInventoryService tankInventoryService;

    /**
     * 단일 탱크 inventory 조회
     */
    @GetMapping("/{tankUuid}")
    @PreAuthorize("hasAuthority('TANK_READ')")
    public TankInventory getInventory(@PathVariable UUID tankUuid) {
        return tankInventoryService.findByTankUuid(tankUuid)
                .orElseThrow(() ->
                        new IllegalStateException("Inventory not found. tankUuid=" + tankUuid)
                );
    }

    /**
     * inventory upsert (절대값)
     */
    @PostMapping("/{tankUuid}")
    @PreAuthorize("hasAuthority('TANK_WRITE')")
    public TankInventory upsertInventory(
            @PathVariable UUID tankUuid,
            @RequestParam String materialKind,
            @RequestParam BigDecimal qtyTotal,
            Principal principal
    ) {
        return tankInventoryService.upsertInventory(
                tankUuid,
                materialKind,
                qtyTotal,
                principal.getName()   // ✅ updatedBy
        );
    }

    /**
     * inventory delta 적용
     */
    @PostMapping("/{tankUuid}/delta")
    @PreAuthorize("hasAuthority('TANK_WRITE')")
    public TankInventory applyDelta(
            @PathVariable UUID tankUuid,
            @RequestParam String materialKind,
            @RequestParam BigDecimal deltaQty,
            Principal principal
    ) {
        return tankInventoryService.applyDelta(
                tankUuid,
                materialKind,
                deltaQty,
                principal.getName()   // ✅ updatedBy
        );
    }
}