package usecase

import (
	"strings"
	"testing"
)

func TestValidateCandidateHumanReviewAcceptsStructuredSelection(t *testing.T) {
	selected := 2
	command := validCandidateHumanReviewCommand()
	command.SelectedCandidateOrdinal = &selected
	command.Items = []CandidateHumanReviewItemInput{
		{
			CandidateOrdinal:  1,
			Label:             "REJECT",
			PrimaryReasonCode: "NOT_BEST_MATCH",
			ReasonCodes:       []string{"NOT_BEST_MATCH"},
		},
		{
			CandidateOrdinal:  2,
			Label:             "ACCEPT",
			PrimaryReasonCode: "SKU_MATCH",
			ReasonCodes:       []string{"SKU_MATCH", "IMAGE_MATCH"},
		},
	}

	if err := validateCandidateHumanReview(command); err != nil {
		t.Fatalf("validate structured selection: %v", err)
	}
}

func TestValidateCandidateHumanReviewRejectsMissingSelectedItem(t *testing.T) {
	selected := 2
	command := validCandidateHumanReviewCommand()
	command.SelectedCandidateOrdinal = &selected

	if err := validateCandidateHumanReview(command); err == nil {
		t.Fatal("expected missing selected item to be rejected")
	}
}

func TestValidateCandidateHumanReviewRequiresOtherNote(t *testing.T) {
	command := validCandidateHumanReviewCommand()
	command.PrimaryReasonCode = "OTHER"
	command.Note = "短"

	if err := validateCandidateHumanReview(command); err == nil {
		t.Fatal("expected short OTHER note to be rejected")
	}
	command.Note = "人工判断更合适"
	if err := validateCandidateHumanReview(command); err != nil {
		t.Fatalf("validate OTHER note: %v", err)
	}
}

func TestValidateCandidateHumanReviewAllowsEmptyNoMatch(t *testing.T) {
	command := validCandidateHumanReviewCommand()
	command.Outcome = "NO_MATCH"
	command.SelectedCandidateOrdinal = nil
	command.PrimaryReasonCode = "NO_ACCEPTABLE_CANDIDATE"
	command.Items = nil

	if err := validateCandidateHumanReview(command); err != nil {
		t.Fatalf("validate empty no-match review: %v", err)
	}
}

func validCandidateHumanReviewCommand() StoreCandidateHumanReviewCommand {
	selected := 1
	return StoreCandidateHumanReviewCommand{
		TaskContentSHA256:        strings.Repeat("a", 64),
		ReasonSchemaVersion:      1,
		Outcome:                  "CANDIDATE_ACCEPTED",
		SelectedCandidateOrdinal: &selected,
		PrimaryReasonCode:        "SELECTED_BEST_MATCH",
		Items: []CandidateHumanReviewItemInput{
			{
				CandidateOrdinal:  1,
				Label:             "ACCEPT",
				PrimaryReasonCode: "SKU_MATCH",
				ReasonCodes:       []string{"SKU_MATCH"},
			},
		},
	}
}