Files
fuj-management/go/internal/domain/matching/infer.go
kacerrandClaude Opus 5.5 022facc957
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refactor: move Python implementation to legacy/, make Go primary
Go (go/) becomes the primary implementation. The original Python
version moves to legacy/ and is kept runnable; new features are still
built in both (see the Dual implementation rule in CLAUDE.md).

- git mv app.py, scripts/, templates/, tests/, pyproject.toml, uv.lock
  and build/ into legacy/
- Makefile: Python targets point at legacy/, venv in legacy/.venv,
  CREDENTIALS_PATH exported for the root .secret/ file
- CI and make image build the Python image with legacy/ as context;
  the Makefile is no longer copied into the image
- legacy/.dockerignore moved to the context root so it takes effect
- CLAUDE.md, docs/README.md, Go comments, fixture README, capture
  script and VS Code launch config updated to the new layout

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-08 11:33:57 +02:00

90 lines
2.6 KiB
Go

package matching
import (
"fmt"
"fuj-management/go/internal/domain/czech"
"time"
)
// Transaction is the subset of a payment row used by InferTransactionDetails.
// Date accepts string ("YYYY-MM-DD"), float64 (Sheets serial), or int — matching
// the heterogeneous types returned by the Sheets API and the FIO scraper.
type Transaction struct {
Sender string
Message string
UserID string
Date any
}
// InferredDetails is the result of InferTransactionDetails.
type InferredDetails struct {
Members []Match
Months []string
SearchText string
}
// InferTransactionDetails infers which member(s) and month(s) a transaction belongs to.
//
// Search text for member matching: sender + message + user_id.
// Month search text: message + user_id only (sender excluded, matching Python).
// Fallback 1: if no members found, retry match on sender alone.
// Fallback 2: if no months found, derive from tx.Date (Sheets serial or YYYY-MM-DD).
//
// defaultYear seeds czech.ParseMonthReferences (Python defaulted to the current year;
// callers should pass time.Now().Year() or a fixed year for deterministic tests).
//
// Ports legacy/scripts/match_payments.py infer_transaction_details.
func InferTransactionDetails(tx Transaction, memberNames []string, defaultYear int) InferredDetails {
searchText := fmt.Sprintf("%s %s %s", tx.Sender, tx.Message, tx.UserID)
members := MatchMembers(searchText, memberNames)
months := czech.ParseMonthReferences(tx.Message+" "+tx.UserID, defaultYear)
if len(members) == 0 {
members = MatchMembers(tx.Sender, memberNames)
}
if len(months) == 0 && tx.Date != nil && tx.Date != "" {
if ym := inferMonthFromDate(tx.Date); ym != "" {
months = []string{ym}
}
}
if months == nil {
months = []string{}
}
return InferredDetails{
Members: members,
Months: months,
SearchText: searchText,
}
}
// inferMonthFromDate converts a date value to "YYYY-MM" for the month fallback.
// Returns "" on any error, matching Python's bare except pass.
func inferMonthFromDate(val any) string {
switch v := val.(type) {
case int:
dt := sheetsEpoch.Add(time.Duration(float64(v) * 24 * float64(time.Hour)))
return dt.Format("2006-01")
case int64:
dt := sheetsEpoch.Add(time.Duration(float64(v) * 24 * float64(time.Hour)))
return dt.Format("2006-01")
case float64:
dt := sheetsEpoch.Add(time.Duration(v * 24 * float64(time.Hour)))
return dt.Format("2006-01")
case string:
if v == "" {
return ""
}
dt, err := time.Parse("2006-01-02", v)
if err != nil {
return ""
}
return dt.Format("2006-01")
default:
return ""
}
}