first commit

backend/internal/calendar/store.go

@@ -0,0 +1,83 @@
+package calendar
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type HolidayRecord struct {
+	ID        string    `json:"id"`
+	Date      string    `json:"date"`
+	Name      string    `json:"name"`
+	Type      string    `json:"type"`
+	Source    string    `json:"source"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+type Store struct {
+	db *pgxpool.Pool
+}
+
+func NewStore(db *pgxpool.Pool) Store {
+	return Store{db: db}
+}
+
+func (s Store) ListHolidaysByYear(ctx context.Context, year int) ([]HolidayRecord, error) {
+	rows, err := s.db.Query(ctx, `
+		SELECT id::text, date::text, name, type, source, created_at, updated_at
+		FROM holidays
+		WHERE date >= make_date($1, 1, 1)
+		  AND date < make_date($1 + 1, 1, 1)
+		ORDER BY date ASC, name ASC
+	`, year)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	holidays := []HolidayRecord{}
+	for rows.Next() {
+		var holiday HolidayRecord
+		if err := rows.Scan(
+			&holiday.ID,
+			&holiday.Date,
+			&holiday.Name,
+			&holiday.Type,
+			&holiday.Source,
+			&holiday.CreatedAt,
+			&holiday.UpdatedAt,
+		); err != nil {
+			return nil, err
+		}
+		holidays = append(holidays, holiday)
+	}
+
+	return holidays, rows.Err()
+}
+
+func (s Store) UpsertHolidays(ctx context.Context, source string, holidays []Holiday) error {
+	for _, holiday := range holidays {
+		payload, err := json.Marshal(holiday)
+		if err != nil {
+			return err
+		}
+
+		if _, err := s.db.Exec(ctx, `
+			INSERT INTO holidays (date, name, type, source, raw_payload)
+			VALUES ($1, $2, $3, $4, $5::jsonb)
+			ON CONFLICT (date, source, name)
+			DO UPDATE SET
+				type = EXCLUDED.type,
+				raw_payload = EXCLUDED.raw_payload,
+				updated_at = now()
+		`, holiday.Date, holiday.Name, holiday.Type, source, string(payload)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}