package party

import (
	"strings"
	"testing"

	"git.golem15.com/golem15/summercms/modules/backpack"
	"git.golem15.com/golem15/summercms/modules/compass"
)

// TestDescribe covers publishing the build-time plugin metadata.
func TestDescribe(t *testing.T) {
	if err := Describe(nil, nil, "v0.6.0"); err == nil || !strings.Contains(err.Error(), "app is nil") {
		t.Errorf("Describe(nil) = %v", err)
	}

	app := backpack.New(&compass.Config{})
	if _, ok := app.Lookup[Installed](); ok {
		t.Fatal("a fresh app already has Installed")
	}
	plugins := []Info{
		{ID: "acme.user", Module: "example.test/sm-user-plugin", Package: "example.test/sm-user-plugin", Name: "User", Version: "v0.1.2", Source: SourceModule},
		{ID: "acme.shop", Package: "example.test/app/plugins/acme/shop", Source: SourceLocal},
	}
	if err := Describe(app, plugins, "v0.6.0"); err != nil {
		t.Fatalf("Describe: %v", err)
	}
	// The caller's slice is copied: changing it later does not change
	// what the app published.
	plugins[0].Version = "v9.9.9"
	got, ok := app.Lookup[Installed]()
	if !ok {
		t.Fatal("Installed not published")
	}
	if got.Framework != "v0.6.0" || len(got.Plugins) != 2 || got.Plugins[0].Version != "v0.1.2" || got.Plugins[1].Source != SourceLocal {
		t.Errorf("Installed = %+v", got)
	}

	// Describe publishes once per app (the generated main calls it once,
	// before Activate); a second call is refused and the first stays.
	if err := Describe(app, nil, "v0.7.0"); err == nil || !strings.Contains(err.Error(), "party:") {
		t.Errorf("second Describe = %v, want a duplicate error", err)
	}
	if again, _ := app.Lookup[Installed](); again.Framework != "v0.6.0" || len(again.Plugins) != 2 {
		t.Errorf("after a second Describe: %+v", again)
	}

	empty := backpack.New(&compass.Config{})
	if err := Describe(empty, nil, ""); err != nil {
		t.Fatalf("Describe with no plugins: %v", err)
	}
	if got, ok := empty.Lookup[Installed](); !ok || got.Plugins == nil || len(got.Plugins) != 0 || got.Framework != "" {
		t.Errorf("empty Installed = %+v, %v", got, ok)
	}

	for _, s := range []string{SourceModule, SourceSubmodule, SourceLocal} {
		if s == "" || strings.ToLower(s) != s {
			t.Errorf("source constant %q", s)
		}
	}
}