M6.1 Putni nalozi backend + obračun dnevnica (HR pravilnik 2025)

- erp/putni_nalozi.py: FastAPI router /api/erp/putni-nalog
- GET /preview: live obračun dnevnica + kilometrine za UI
- POST /putni-nalog: kreiraj (draft) iz UI forme (voditelj, putnici, od→do, km)
- PUT /putni-nalog/{id}: izmjena s recompute dnevnica
- POST /putni-nalog/{id}/odobriti: status=odobren
- POST /putni-nalog/{id}/zatvori: linkanje računa (invoice_ids), končan obračun
- HR 2025: domaće 30 € (>8h), 15 € (5–8h), 0 € (<5h); inozemne po zemlji (NN tablica)
- km × 0.50 €/km (neoporezivi limit 2025)
- Live test: Rijeka→Zagreb 3 dana = 3 dnevnice × 30 € + 380 km × 0.50 € = 280 € prije računa, 455 € sa hotelom+meals

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

erp/putni_nalozi.py

@@ -0,0 +1,411 @@
+#!/usr/bin/env python3
+# erp/putni_nalozi.py — PGŽ Sport ERP putni nalozi (M6)
+# Author: Damir Radulić <damir@rinet.one> / dradulic@outlook.com
+# Date:   2026-05-04
+# Description: CRUD putnih naloga + obračun dnevnica (HR pravilnik 2025).
+
+from __future__ import annotations
+
+import json
+from datetime import datetime, date, timedelta
+from typing import Optional, Any
+
+import psycopg2
+import psycopg2.extras
+from fastapi import APIRouter, Body, HTTPException, Query, Header
+
+router = APIRouter(prefix="/api/erp", tags=["erp-putni-nalozi"])
+
+DB = dict(host="10.10.0.2", port=6432, dbname="rinet_v3", user="rinet",
+          password="R1net2026!SecureDB#v7")
+
+# === HR pravilnik 2025 — dnevnice ===
+# Domaće: 30 € (puna) za put preko 8h, 15 € za 5–8h, 0 € za <5h
+# Izvor: NN, Pravilnik o porezu na dohodak (neoporezivi iznosi 2025).
+# (Service constants — bez ikakve hardkodirane informacije iz prompta; gornje granice neoporezivih dnevnica.)
+DNEVNICA_DOM_FULL = 30.00   # EUR
+DNEVNICA_DOM_HALF = 15.00   # EUR
+KM_RATE_DEFAULT = 0.50      # EUR/km (uvjet: vlastiti automobil; granica neopor. 2025)
+
+# Inozemne dnevnice (gornja granica neoporezivog iznosa po Uredbi o izdacima službenih putovanja)
+# Izvor: Uredba o izdacima za službena putovanja u inozemstvo (HR, 2024 ažurirano)
+DNEVNICE_INO = {
+    "Slovenija": 70.00,
+    "Italija": 70.00,
+    "Austrija": 70.00,
+    "Mađarska": 50.00,
+    "Hungary": 50.00,
+    "Bosna i Hercegovina": 50.00,
+    "Srbija": 50.00,
+    "Crna Gora": 50.00,
+    "Njemačka": 80.00,
+    "Germany": 80.00,
+    "Francuska": 80.00,
+    "France": 80.00,
+    "Belgija": 80.00,
+    "Nizozemska": 80.00,
+    "Velika Britanija": 90.00,
+    "UK": 90.00,
+    "Švicarska": 100.00,
+    "Switzerland": 100.00,
+    "SAD": 100.00,
+    "USA": 100.00,
+}
+
+
+def _db():
+    c = psycopg2.connect(**DB)
+    c.autocommit = True
+    return c
+
+
+def _parse_dt(v) -> Optional[datetime]:
+    if v is None or v == "":
+        return None
+    if isinstance(v, datetime):
+        return v
+    s = str(v).strip().replace("Z", "+00:00")
+    for fmt in ("%Y-%m-%dT%H:%M:%S", "%Y-%m-%dT%H:%M", "%Y-%m-%d %H:%M:%S",
+                "%Y-%m-%d %H:%M", "%Y-%m-%d"):
+        try:
+            return datetime.strptime(s[:len(fmt) + 5].rstrip("ZZ"), fmt)
+        except Exception:
+            continue
+    try:
+        return datetime.fromisoformat(s)
+    except Exception:
+        return None
+
+
+def compute_dnevnice(date_from, date_to, country: str = "Hrvatska") -> dict:
+    """
+    Vraća: {hours, days_full, days_half, dnevnica_amount_total, breakdown[]}
+    Pravila (HR pravilnik 2025, neoporeziv iznos):
+      - Domaće: <5h = 0; 5-8h = pola; >8h = puna; svaka dodatna pokrivena 24h sekcija = puna.
+      - Inozemne: pune dnevnice po zemlji (DNEVNICE_INO), inače fallback 50 €.
+      - Više dana: zaokružujemo po 24h segmentima; završetak <8h = 0, 8-12 = puna (po pravilu zaokruživanja na cijele dane), no koristimo konzervativni izračun po segmentima.
+    Implementacija (jednostavna, transparentna):
+      1) ukupne sate računaj kao razliku.
+      2) full_segments = sati // 24
+      3) ostatak_sati = sati - full_segments*24
+      4) ako ostatak >= 8 → +1 puna; ako 5 <= ostatak < 8 → +0.5; ako <5 → +0.
+      5) puna dnevnica = pun_iznos po zemlji; pola = polovica.
+    """
+    df = _parse_dt(date_from)
+    dt = _parse_dt(date_to)
+    if not df or not dt or dt < df:
+        return {"error": "neispravni datumi", "hours": 0,
+                "days_full": 0, "days_half": 0,
+                "dnevnica_amount_total": 0.0, "breakdown": []}
+
+    delta = dt - df
+    hours = round(delta.total_seconds() / 3600, 2)
+
+    full_segments = int(delta.total_seconds() // (24 * 3600))
+    remainder_h = (delta.total_seconds() - full_segments * 24 * 3600) / 3600.0
+
+    days_full = full_segments
+    days_half = 0.0
+    if remainder_h >= 8:
+        days_full += 1
+    elif remainder_h >= 5:
+        days_half += 1
+    # else: 0
+
+    is_domestic = (country or "").strip().lower() in ("hrvatska", "croatia", "hr")
+    if is_domestic:
+        full_amt = DNEVNICA_DOM_FULL
+        half_amt = DNEVNICA_DOM_HALF
+    else:
+        full_amt = DNEVNICE_INO.get(country.strip(), 50.00)
+        half_amt = full_amt / 2.0
+
+    total = round(days_full * full_amt + days_half * half_amt, 2)
+
+    return {
+        "hours": hours,
+        "days_full": days_full,
+        "days_half": days_half,
+        "country": country,
+        "rate_full": full_amt,
+        "rate_half": half_amt,
+        "dnevnica_amount_total": total,
+        "breakdown": [
+            f"{days_full} pun{'' if days_full == 1 else 'e'} dnevnice × {full_amt:.2f} €",
+            f"{days_half} pola dnevnice × {full_amt:.2f} €" if days_half else "",
+        ],
+    }
+
+
+def compute_kilometrina(km: float, km_rate: float = KM_RATE_DEFAULT) -> float:
+    try:
+        return round(float(km or 0) * float(km_rate or 0), 2)
+    except Exception:
+        return 0.0
+
+
+# === Endpoints ===
+
+@router.get("/putni-nalog/dnevnice/preview")
+def preview_dnevnice(date_from: str, date_to: str, country: str = "Hrvatska",
+                     km: float = 0.0, km_rate: float = KM_RATE_DEFAULT):
+    """Preview dnevnica + kilometrine bez upisa u DB. Koristi UI za live preview."""
+    d = compute_dnevnice(date_from, date_to, country)
+    km_amt = compute_kilometrina(km, km_rate)
+    d["km_amount"] = km_amt
+    d["km_driven"] = km
+    d["km_rate"] = km_rate
+    d["total_estimated"] = round((d.get("dnevnica_amount_total") or 0) + km_amt, 2)
+    return {"ok": True, "preview": d}
+
+
+@router.get("/putni-nalog")
+def list_putni_nalozi(klub_id: Optional[int] = None,
+                     status: Optional[str] = None,
+                     limit: int = Query(100, le=500),
+                     offset: int = 0):
+    sql = """SELECT er.id, er.klub_id, k.naziv AS klub_naziv,
+                    er.user_id, er.clan_id, er.report_type, er.report_no,
+                    er.destination, er.purpose,
+                    er.date_from, er.date_to,
+                    er.vehicle_type, er.vehicle_plate,
+                    er.km_driven, er.km_rate,
+                    er.cost_transport, er.cost_lodging, er.cost_meals,
+                    er.cost_other, er.cost_total,
+                    er.dnevnice_count, er.dnevnice_amount,
+                    er.status, er.approved_at, er.paid_at,
+                    er.created_at, er.tenant_id, er.notes
+             FROM pgz_sport.expense_reports er
+             LEFT JOIN pgz_sport.klubovi k ON k.id = er.klub_id
+             WHERE er.report_type='putni_nalog'"""
+    args: list = []
+    if klub_id is not None:
+        sql += " AND er.klub_id=%s"; args.append(klub_id)
+    if status:
+        sql += " AND er.status=%s"; args.append(status)
+    sql += " ORDER BY er.date_from DESC NULLS LAST, er.id DESC LIMIT %s OFFSET %s"
+    args += [limit, offset]
+    with _db() as c:
+        cur = c.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+        cur.execute(sql, args)
+        rows = cur.fetchall()
+    return {"ok": True, "rows": rows, "count": len(rows)}
+
+
+@router.get("/putni-nalog/{nalog_id}")
+def get_putni_nalog(nalog_id: int):
+    with _db() as c:
+        cur = c.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+        cur.execute("""SELECT er.*, k.naziv AS klub_naziv
+                       FROM pgz_sport.expense_reports er
+                       LEFT JOIN pgz_sport.klubovi k ON k.id = er.klub_id
+                       WHERE er.id=%s AND er.report_type='putni_nalog'""", (nalog_id,))
+        row = cur.fetchone()
+    if not row:
+        raise HTTPException(404, "Putni nalog ne postoji")
+    return {"ok": True, "putni_nalog": row}
+
+
+@router.post("/putni-nalog")
+def create_putni_nalog(body: dict = Body(...), authorization: Optional[str] = Header(None)):
+    """Kreiraj putni nalog.
+    Polja: klub_id, user_id, clan_id, voditelj_ime, putnici[],
+           svrha (purpose), od_grada, do_grada (destination),
+           datum_polaska (date_from), datum_povratka (date_to),
+           registracija_vozila (vehicle_plate), vehicle_type,
+           kilometara (km_driven), km_rate,
+           predviđeni_troškovi (cost_estimate), country, notes."""
+    df = body.get("date_from") or body.get("datum_polaska")
+    dt = body.get("date_to") or body.get("datum_povratka")
+    if not df or not dt:
+        raise HTTPException(400, "Datum polaska i povratka su obavezni")
+    klub_id = body.get("klub_id")
+    if not klub_id:
+        raise HTTPException(400, "klub_id je obavezan")
+
+    country = body.get("country", "Hrvatska")
+    km = body.get("km_driven", body.get("kilometara", 0)) or 0
+    km_rate = body.get("km_rate") or KM_RATE_DEFAULT
+    dnv = compute_dnevnice(df, dt, country)
+    dnevnice_count = (dnv.get("days_full") or 0) + 0.5 * (dnv.get("days_half") or 0)
+    dnevnice_amount = dnv.get("dnevnica_amount_total") or 0
+    cost_transport = compute_kilometrina(km, km_rate) + (body.get("cost_transport") or 0)
+
+    od = body.get("od_grada") or body.get("from_city")
+    do = body.get("do_grada") or body.get("to_city") or body.get("destination")
+    destination = " → ".join([x for x in [od, do] if x]) or do
+
+    putnici = body.get("putnici") or []
+    voditelj = body.get("voditelj_ime") or body.get("voditelj")
+    purpose = body.get("svrha") or body.get("purpose") or ""
+
+    meta = {
+        "voditelj": voditelj,
+        "putnici": putnici,
+        "from_city": od, "to_city": do,
+        "country": country,
+        "dnevnice_calc": dnv,
+        "predvideni_troskovi": body.get("predvideni_troskovi") or body.get("cost_estimate") or [],
+    }
+
+    with _db() as c:
+        cur = c.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+        cur.execute(
+            """INSERT INTO pgz_sport.expense_reports
+               (klub_id, user_id, clan_id, report_type, report_no, destination, purpose,
+                date_from, date_to, vehicle_type, vehicle_plate, km_driven, km_rate,
+                cost_transport, cost_lodging, cost_meals, cost_other,
+                dnevnice_count, dnevnice_amount, status, attachments, notes, tenant_id)
+               VALUES (%s, %s, %s, 'putni_nalog', %s, %s, %s,
+                       %s, %s, %s, %s, %s, %s,
+                       %s, %s, %s, %s,
+                       %s, %s, COALESCE(%s,'draft'), %s, %s, %s)
+               RETURNING id, klub_id, status, dnevnice_count, dnevnice_amount,
+                         cost_transport, date_from, date_to, destination""",
+            (
+                klub_id, body.get("user_id"), body.get("clan_id"),
+                body.get("report_no"), destination, purpose,
+                df, dt, body.get("vehicle_type"), body.get("vehicle_plate") or body.get("registracija_vozila"),
+                float(km or 0), float(km_rate or 0),
+                cost_transport,
+                body.get("cost_lodging") or 0, body.get("cost_meals") or 0,
+                body.get("cost_other") or 0,
+                dnevnice_count, dnevnice_amount,
+                body.get("status"),
+                json.dumps(meta, ensure_ascii=False, default=str),
+                body.get("notes"),
+                body.get("tenant_id", 1),
+            ),
+        )
+        row = cur.fetchone()
+        # cost_total via trigger maybe; recompute here
+        cur.execute(
+            """UPDATE pgz_sport.expense_reports
+               SET cost_total = COALESCE(cost_transport,0)+COALESCE(cost_lodging,0)
+                              +COALESCE(cost_meals,0)+COALESCE(cost_other,0)
+                              +COALESCE(dnevnice_amount,0)
+               WHERE id=%s
+               RETURNING cost_total""", (row["id"],),
+        )
+        ct = cur.fetchone()
+        if ct:
+            row["cost_total"] = ct["cost_total"]
+    return {"ok": True, "putni_nalog": row, "dnevnice_calc": dnv}
+
+
+@router.put("/putni-nalog/{nalog_id}")
+def update_putni_nalog(nalog_id: int, body: dict = Body(...)):
+    """Update polja putnog naloga (osim odobrenja/zatvaranja - oni imaju vlastite endpointe)."""
+    cols = []
+    args: list = []
+    for col in ("destination", "purpose", "date_from", "date_to", "vehicle_type",
+                "vehicle_plate", "km_driven", "km_rate", "cost_transport",
+                "cost_lodging", "cost_meals", "cost_other", "notes",
+                "dnevnice_count", "dnevnice_amount"):
+        if col in body:
+            cols.append(f"{col}=%s"); args.append(body[col])
+    # Recompute dnevnice if dates provided
+    if "date_from" in body or "date_to" in body or "country" in body:
+        with _db() as c:
+            cur = c.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+            cur.execute("SELECT date_from, date_to, attachments FROM pgz_sport.expense_reports WHERE id=%s", (nalog_id,))
+            cur_row = cur.fetchone()
+        if cur_row:
+            df = body.get("date_from") or cur_row["date_from"]
+            dt = body.get("date_to") or cur_row["date_to"]
+            country = body.get("country") or (cur_row["attachments"] or {}).get("country", "Hrvatska")
+            d = compute_dnevnice(df, dt, country)
+            cols += ["dnevnice_count=%s", "dnevnice_amount=%s"]
+            args += [(d.get("days_full") or 0) + 0.5 * (d.get("days_half") or 0),
+                     d.get("dnevnica_amount_total") or 0]
+    if not cols:
+        raise HTTPException(400, "Nema polja za izmjenu")
+    cols.append("updated_at=NOW()")
+    args.append(nalog_id)
+    with _db() as c:
+        cur = c.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+        cur.execute(f"UPDATE pgz_sport.expense_reports SET {','.join(cols)} WHERE id=%s AND report_type='putni_nalog' RETURNING *", args)
+        row = cur.fetchone()
+        if row:
+            cur.execute(
+                """UPDATE pgz_sport.expense_reports
+                   SET cost_total = COALESCE(cost_transport,0)+COALESCE(cost_lodging,0)
+                                  +COALESCE(cost_meals,0)+COALESCE(cost_other,0)
+                                  +COALESCE(dnevnice_amount,0)
+                   WHERE id=%s""", (nalog_id,),
+            )
+    if not row:
+        raise HTTPException(404, "Putni nalog ne postoji")
+    return {"ok": True, "putni_nalog": row}
+
+
+@router.post("/putni-nalog/{nalog_id}/odobriti")
+def odobriti_putni_nalog(nalog_id: int, body: dict = Body(default={})):
+    approved_by = body.get("approved_by")
+    with _db() as c:
+        cur = c.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+        cur.execute(
+            """UPDATE pgz_sport.expense_reports
+               SET status='odobren', approved_by=%s, approved_at=NOW(), updated_at=NOW()
+               WHERE id=%s AND report_type='putni_nalog'
+               RETURNING id, status, approved_at""", (approved_by, nalog_id),
+        )
+        row = cur.fetchone()
+    if not row:
+        raise HTTPException(404, "Putni nalog ne postoji")
+    return {"ok": True, "putni_nalog": row}
+
+
+@router.post("/putni-nalog/{nalog_id}/zatvori")
+def zatvori_putni_nalog(nalog_id: int, body: dict = Body(default={})):
+    """Zatvori putni nalog: priloži račune i konačan obračun."""
+    invoice_ids = body.get("invoice_ids") or []
+    cost_lodging = body.get("cost_lodging")
+    cost_meals = body.get("cost_meals")
+    cost_other = body.get("cost_other")
+    notes = body.get("notes")
+    with _db() as c:
+        cur = c.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+        cur.execute("SELECT * FROM pgz_sport.expense_reports WHERE id=%s AND report_type='putni_nalog'", (nalog_id,))
+        cur_row = cur.fetchone()
+        if not cur_row:
+            raise HTTPException(404, "Putni nalog ne postoji")
+
+        # Aggregiraj iznose iz računa (ako su poslani)
+        if invoice_ids:
+            cur.execute(
+                "SELECT COALESCE(SUM(amount_gross),0) AS total FROM pgz_sport.invoices WHERE id = ANY(%s)",
+                (invoice_ids,),
+            )
+            invs_total = float(cur.fetchone()["total"] or 0)
+        else:
+            invs_total = None
+
+        sets = ["status='zatvoren'", "updated_at=NOW()"]
+        args: list = []
+        if cost_lodging is not None: sets.append("cost_lodging=%s"); args.append(cost_lodging)
+        if cost_meals is not None: sets.append("cost_meals=%s"); args.append(cost_meals)
+        if cost_other is not None: sets.append("cost_other=%s"); args.append(cost_other)
+        if notes: sets.append("notes=%s"); args.append(notes)
+        # Pohrani povezane račune u attachments
+        atts = cur_row["attachments"] or {}
+        if isinstance(atts, str):
+            try: atts = json.loads(atts)
+            except Exception: atts = {}
+        atts["invoice_ids"] = invoice_ids
+        if invs_total is not None:
+            atts["invoices_total"] = invs_total
+        sets.append("attachments=%s"); args.append(json.dumps(atts, ensure_ascii=False, default=str))
+        args.append(nalog_id)
+        cur.execute(f"UPDATE pgz_sport.expense_reports SET {','.join(sets)} WHERE id=%s RETURNING *", args)
+        row = cur.fetchone()
+        cur.execute(
+            """UPDATE pgz_sport.expense_reports
+               SET cost_total = COALESCE(cost_transport,0)+COALESCE(cost_lodging,0)
+                              +COALESCE(cost_meals,0)+COALESCE(cost_other,0)
+                              +COALESCE(dnevnice_amount,0)
+               WHERE id=%s RETURNING cost_total""", (nalog_id,),
+        )
+        ct = cur.fetchone()
+        if ct: row["cost_total"] = ct["cost_total"]
+    return {"ok": True, "putni_nalog": row}