first commit

backend/apps/operations/services/karung_web.py

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+from __future__ import annotations
+
+from datetime import date
+from typing import Any
+from urllib.parse import urljoin
+
+import httpx
+from django.conf import settings
+from django.core.exceptions import ValidationError
+
+from apps.farms.models import Cycle
+from apps.operations.models import FeedSacks
+
+
+class KarungWebError(Exception):
+    def __init__(self, message: str, status_code: int | None = None):
+        super().__init__(message)
+        self.status_code = status_code
+
+
+class KarungWebClient:
+    """Outbound client for karung-web-admin — base URL from settings only."""
+
+    PATH = "/api/v1/cycles/active/sections"
+
+    def __init__(self, base_url: str | None = None, timeout: float | None = None):
+        self.base_url = (base_url or settings.KARUNG_WEB_ADMIN_BASE_URL).rstrip("/")
+        self.timeout = timeout or settings.KARUNG_WEB_ADMIN_TIMEOUT_SECONDS
+
+    def fetch_active_sections(self) -> dict[str, Any]:
+        url = urljoin(self.base_url + "/", self.PATH.lstrip("/"))
+        try:
+            with httpx.Client(timeout=self.timeout) as client:
+                response = client.get(url)
+        except httpx.HTTPError as exc:
+            raise KarungWebError(f"karung-web-admin request failed: {exc}") from exc
+        if response.status_code >= 400:
+            raise KarungWebError(
+                f"karung-web-admin HTTP {response.status_code}: {response.text[:300]}",
+                status_code=response.status_code,
+            )
+        payload = response.json()
+        if not payload.get("success", True):
+            error = payload.get("error") or {}
+            raise KarungWebError(error.get("message") or "karung-web-admin returned failure")
+        return payload.get("data") or payload
+
+
+def request_karung(
+    cycle: Cycle,
+    *,
+    section: str = "today",
+) -> tuple[FeedSacks, dict[str, Any]]:
+    if section not in {"today", "yesterday_history"}:
+        raise ValidationError("section must be today or yesterday_history")
+
+    client = KarungWebClient()
+    data = client.fetch_active_sections()
+    sections = data.get("sections") or {}
+    block = sections.get(section) or {}
+    totals = block.get("totals") or {}
+    remote_cycle = data.get("cycle") or {}
+
+    in_today = int(totals.get("masuk") or 0)
+    out_today = int(totals.get("tuang") or 0)
+    feed_use_today = out_today
+    saldo_awal = int(remote_cycle.get("saldo_awal") or 0)
+
+    snapshot_raw = block.get("date")
+    snapshot_date = date.fromisoformat(str(snapshot_raw)) if snapshot_raw else date.today()
+
+    prior = (
+        FeedSacks.objects.filter(cycle=cycle)
+        .exclude(date=snapshot_date)
+        .order_by("-date", "-pk")
+        .first()
+    )
+    if prior:
+        in_total = prior.in_total + in_today
+        out_total = prior.out_total + out_today
+        feed_use_total = prior.feed_use_total + feed_use_today
+    else:
+        in_total = cycle.feed_initial_balance + in_today
+        out_total = out_today
+        feed_use_total = feed_use_today
+
+    feed_sack, _ = FeedSacks.objects.update_or_create(
+        cycle=cycle,
+        date=snapshot_date,
+        defaults={
+            "in_today": in_today,
+            "out_today": out_today,
+            "in_total": in_total,
+            "out_total": out_total,
+            "feed_use_today": feed_use_today,
+            "feed_use_total": feed_use_total,
+        },
+    )
+    summary = {
+        "section": section,
+        "snapshot_date": snapshot_date.isoformat(),
+        "totals": totals,
+        "saldo_awal": saldo_awal,
+        "remote_cycle": remote_cycle,
+    }
+    return feed_sack, summary