850f3a62c8
Pure Go implementation of patent litigation cost calculator with: - Step-based GKG/RVG fee accumulator across 4 historical schedules (2005/2013/2021/2025 + Aktuell alias) - Instance multiplier tables for 8 court types (LG, OLG, BGH NZB/Rev, BPatG, BGH Null, DPMA, BPatG Canc) - Full attorney fee calculation (VG, TG, Erhöhungsgebühr Nr. 1008 VV RVG, Auslagenpauschale) - Prozesskostensicherheit computation - UPC fee data (pre-2026 and 2026 schedules with value-based brackets, recoverable costs ceilings) - Public API: POST /api/fees/calculate, GET /api/fees/schedules (no auth required) - 22 unit tests covering all calculation paths Fixes 3 Excel bugs: - Bug 1: Prozesskostensicherheit VAT formula (subtract → add) - Bug 2: Security for costs uses GKG base for court fee, not RVG - Bug 3: Expert fees included in BPatG instance total
54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
package handlers
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import (
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"encoding/json"
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"net/http"
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"mgit.msbls.de/m/KanzlAI-mGMT/internal/models"
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"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
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)
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// FeeCalculatorHandler handles fee calculation API endpoints.
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type FeeCalculatorHandler struct {
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calc *services.FeeCalculator
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}
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func NewFeeCalculatorHandler(calc *services.FeeCalculator) *FeeCalculatorHandler {
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return &FeeCalculatorHandler{calc: calc}
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}
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// Calculate handles POST /api/fees/calculate.
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func (h *FeeCalculatorHandler) Calculate(w http.ResponseWriter, r *http.Request) {
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var req models.FeeCalculateRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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writeError(w, http.StatusBadRequest, "invalid request body")
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return
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}
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if req.Streitwert <= 0 {
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writeError(w, http.StatusBadRequest, "streitwert must be positive")
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return
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}
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if req.VATRate < 0 || req.VATRate > 1 {
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writeError(w, http.StatusBadRequest, "vat_rate must be between 0 and 1")
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return
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}
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if len(req.Instances) == 0 {
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writeError(w, http.StatusBadRequest, "at least one instance is required")
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return
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}
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resp, err := h.calc.CalculateFullLitigation(req)
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if err != nil {
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writeError(w, http.StatusBadRequest, err.Error())
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return
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}
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writeJSON(w, http.StatusOK, resp)
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}
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// Schedules handles GET /api/fees/schedules.
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func (h *FeeCalculatorHandler) Schedules(w http.ResponseWriter, r *http.Request) {
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writeJSON(w, http.StatusOK, h.calc.GetSchedules())
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}
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