package domain

import (
	"errors"
	"testing"
)

func TestResolveAppStatusCoversAllStates(t *testing.T) {
	tests := []struct {
		name  string
		facts AppStatusFacts
		want  AppStatus
	}{
		{name: "not installed", want: StatusNotInstalled},
		{name: "queued", facts: AppStatusFacts{Operation: StatusQueued}, want: StatusQueued},
		{name: "downloading", facts: AppStatusFacts{Operation: StatusDownloading}, want: StatusDownloading},
		{name: "verifying", facts: AppStatusFacts{Operation: StatusVerifying}, want: StatusVerifying},
		{name: "extracting", facts: AppStatusFacts{Operation: StatusExtracting}, want: StatusExtracting},
		{name: "installing", facts: AppStatusFacts{Operation: StatusInstalling}, want: StatusInstalling},
		{
			name: "installed",
			facts: AppStatusFacts{
				InstalledVersion: "1.2.0",
				CatalogVersion:   "1.2.0",
			},
			want: StatusInstalled,
		},
		{
			name: "update available",
			facts: AppStatusFacts{
				InstalledVersion: "1.2.0",
				CatalogVersion:   "1.3.0",
			},
			want: StatusUpdateAvailable,
		},
		{name: "running", facts: AppStatusFacts{Running: true}, want: StatusRunning},
		{name: "failed", facts: AppStatusFacts{Operation: StatusFailed}, want: StatusFailed},
		{
			name:  "rollback pending",
			facts: AppStatusFacts{RecoveryPending: true},
			want:  StatusRollbackPending,
		},
		{
			name:  "incompatible",
			facts: AppStatusFacts{Incompatible: true},
			want:  StatusIncompatible,
		},
	}

	seen := make(map[AppStatus]bool)
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			status, err := ResolveAppStatus(test.facts)
			if err != nil {
				t.Fatalf("ResolveAppStatus() error = %v", err)
			}
			if status != test.want {
				t.Fatalf("status = %q, want %q", status, test.want)
			}
			seen[status] = true
		})
	}
	if len(seen) != 12 {
		t.Fatalf("covered %d states, want 12", len(seen))
	}
}

func TestResolveAppStatusPriorityAndValidation(t *testing.T) {
	status, err := ResolveAppStatus(AppStatusFacts{
		Operation:       StatusDownloading,
		Running:         true,
		RecoveryPending: true,
		Incompatible:    true,
	})
	if err != nil {
		t.Fatalf("ResolveAppStatus() error = %v", err)
	}
	if status != StatusRollbackPending {
		t.Fatalf("status = %q, want %q", status, StatusRollbackPending)
	}

	_, err = ResolveAppStatus(AppStatusFacts{Operation: StatusInstalled})
	if !errors.Is(err, ErrInvalidStatusFacts) {
		t.Fatalf("operation error = %v, want %v", err, ErrInvalidStatusFacts)
	}
	_, err = ResolveAppStatus(AppStatusFacts{InstalledVersion: "not-semver"})
	if !errors.Is(err, ErrInvalidStatusFacts) {
		t.Fatalf("version error = %v, want %v", err, ErrInvalidStatusFacts)
	}
}