package repository

import (
	"database/sql"
	"testing"
	"time"
)

func TestLabAgeCodeMatchesCarbonDateDiff(t *testing.T) {
	birth := time.Date(1993, time.March, 4, 0, 0, 0, 0, time.UTC)
	transaction := time.Date(2026, time.August, 19, 0, 0, 0, 0, time.UTC)
	if got := labAgeCode(birth, transaction); got != "0330515" {
		t.Fatalf("age code=%s, want 0330515", got)
	}

	endOfMonthBirth := time.Date(2025, time.January, 31, 0, 0, 0, 0, time.UTC)
	marchFirst := time.Date(2025, time.March, 1, 0, 0, 0, 0, time.UTC)
	if got := labAgeCode(endOfMonthBirth, marchFirst); got != "0000029" {
		t.Fatalf("end-of-month age code=%s, want 0000029", got)
	}
}

func TestFormatLabReferenceValue(t *testing.T) {
	value := formatLabReferenceValue(
		sql.NullString{},
		sql.NullString{String: "12.5", Valid: true},
		sql.NullString{String: "17.5", Valid: true},
	)
	if value == nil || *value != "12.5 - 17.5" {
		t.Fatalf("reference=%v", value)
	}

	description := formatLabReferenceValue(sql.NullString{String: " Normal ", Valid: true}, sql.NullString{}, sql.NullString{})
	if description == nil || *description != "Normal" {
		t.Fatalf("description=%v", description)
	}
}

func TestFindColumnIsCaseInsensitiveAndHonorsCandidatePriority(t *testing.T) {
	columns := []string{"Lab_AnalyzerID", "AnalyzerID", "PROSES"}
	if got := findColumn(columns, "AnalyzerID", "Lab_AnalyzerID"); got != "AnalyzerID" {
		t.Fatalf("column=%q", got)
	}
	if got := findColumn(columns, "Proses"); got != "PROSES" {
		t.Fatalf("column=%q", got)
	}
}