package domain_test

import (
	"errors"
	"testing"

	"cmbuyer/admin/internal/domain"
)

func TestSubmissionTransitions(t *testing.T) {
	tests := []struct {
		name    string
		current domain.SubmissionStatus
		next    domain.SubmissionStatus
		allowed bool
	}{
		{"submitted", domain.SubmissionStatusFenced, domain.SubmissionStatusSubmitted, true},
		{"uncertain requires reconciliation", domain.SubmissionStatusFenced, domain.SubmissionStatusReconciliationRequired, true},
		{"manual review resolves reconciliation", domain.SubmissionStatusReconciliationRequired, domain.SubmissionStatusManualResolved, true},
		{"cannot reopen fenced submission", domain.SubmissionStatusSubmitted, domain.SubmissionStatusFenced, false},
		{"submitted cannot require reconciliation", domain.SubmissionStatusSubmitted, domain.SubmissionStatusReconciliationRequired, false},
		{"cannot skip reconciliation", domain.SubmissionStatusFenced, domain.SubmissionStatusManualResolved, false},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			if got := test.current.CanTransitionTo(test.next); got != test.allowed {
				t.Fatalf("CanTransitionTo(%s, %s) = %t, want %t", test.current, test.next, got, test.allowed)
			}

			result, err := domain.TransitionSubmission(test.current, test.next)
			if test.allowed {
				if err != nil {
					t.Fatalf("TransitionSubmission(%s, %s): %v", test.current, test.next, err)
				}
				if result != test.next {
					t.Fatalf("TransitionSubmission(%s, %s) = %s, want %s", test.current, test.next, result, test.next)
				}
				return
			}

			if !errors.Is(err, domain.ErrInvalidSubmissionTransition) {
				t.Fatalf("TransitionSubmission(%s, %s) error = %v, want ErrInvalidSubmissionTransition", test.current, test.next, err)
			}
		})
	}
}