// Copyright (C) 2026 Dcntrlized
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package catalog

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"git.dcntrlized.org/Dcntrlized/Maestro/lib/catalog"
)

func serveDownload(t *testing.T, h *Handler, id, filename string) *httptest.ResponseRecorder {
	t.Helper()
	req := httptest.NewRequest(http.MethodGet, "/api/catalog/artifacts/"+id+"/"+filename, nil)
	req.SetPathValue("id", id)
	req.SetPathValue("filename", filename)
	rec := httptest.NewRecorder()
	h.Download(rec, req)
	return rec
}

func TestDownloadHostedExactBytesAndHeaders(t *testing.T) {
	h, _ := newTestHandler(t)
	app := seedHostedApp(t, h, "com.example.download", "exact-apk-bytes")

	rec := serveDownload(t, h, app.ID, app.Artifact.Filename)
	if rec.Code != http.StatusOK {
		t.Fatalf("status = %d body %s", rec.Code, rec.Body.String())
	}
	if rec.Body.String() != "exact-apk-bytes" {
		t.Fatalf("body = %q", rec.Body.String())
	}
	if got := rec.Header().Get("Content-Length"); got != "15" {
		t.Fatalf("Content-Length = %q, want 15", got)
	}
	if got := rec.Header().Get("X-Content-SHA256"); got != app.Artifact.SHA256 {
		t.Fatalf("X-Content-SHA256 = %q, want %q", got, app.Artifact.SHA256)
	}
	if got := rec.Header().Get("Content-Type"); got != catalog.DefaultArtifactContentType {
		t.Fatalf("Content-Type = %q", got)
	}
	if got := rec.Header().Get("Access-Control-Allow-Origin"); got != "*" {
		t.Fatalf("Access-Control-Allow-Origin = %q", got)
	}
}

func TestDownloadUnknownAndWrongFilename(t *testing.T) {
	h, _ := newTestHandler(t)
	app := seedHostedApp(t, h, "com.example.dl2", "bytes")

	if rec := serveDownload(t, h, app.ID, "other.apk"); rec.Code != http.StatusNotFound {
		t.Fatalf("wrong filename status = %d", rec.Code)
	}
	if rec := serveDownload(t, h, "a_missing", "app.apk"); rec.Code != http.StatusNotFound {
		t.Fatalf("unknown id status = %d", rec.Code)
	}
}

func TestDownloadLinkRedirects(t *testing.T) {
	h, _ := newTestHandler(t)
	link := "https://downloads.example.org/app.apk"
	app := catalog.App{
		ID: catalog.AppID("com.example.redirect"), Package: "com.example.redirect", Name: "Link", VersionName: "1.0",
		Artifact: catalog.Artifact{
			Filename: "app.apk", SHA256: strings.Repeat("c", 64),
			Kind: catalog.KindLink, SourceURL: link,
		},
	}
	if err := h.store.Upsert(app); err != nil {
		t.Fatalf("seed link: %v", err)
	}
	rec := serveDownload(t, h, app.ID, "app.apk")
	if rec.Code != http.StatusFound {
		t.Fatalf("status = %d, want 302", rec.Code)
	}
	if loc := rec.Header().Get("Location"); loc != link {
		t.Fatalf("Location = %q, want %q", loc, link)
	}
	if got := rec.Header().Get("Access-Control-Allow-Origin"); got != "*" {
		t.Fatalf("redirect ACAO = %q", got)
	}
}

func TestDownloadPrivacySwitchOff(t *testing.T) {
	t.Setenv("DCNTRLIZED_PUBLIC_PROFILE", "false")
	h, _ := newTestHandler(t)
	app := seedHostedApp(t, h, "com.example.private", "bytes")

	if rec := serveDownload(t, h, app.ID, app.Artifact.Filename); rec.Code != http.StatusNotFound {
		t.Fatalf("status = %d, want 404 when the profile switch is off", rec.Code)
	}

	req := httptest.NewRequest(http.MethodGet, "/api/catalog/icons/"+app.ID, nil)
	req.SetPathValue("id", app.ID)
	rec := httptest.NewRecorder()
	h.IconBytes(rec, req)
	if rec.Code != http.StatusNotFound {
		t.Fatalf("icon status = %d, want 404 when the profile switch is off", rec.Code)
	}
}

func TestIconBytes(t *testing.T) {
	h, _ := newTestHandler(t)
	app := seedHostedApp(t, h, "com.example.icon2", "bytes")
	icon := append([]byte("\x89PNG\r\n\x1a\n"), []byte("png-body")...)
	if _, err := h.store.SaveIcon(app.ID, icon); err != nil {
		t.Fatalf("save icon: %v", err)
	}
	stored, _ := h.store.Get(app.ID)
	stored.IconPath = "icons/" + app.ID
	if err := h.store.Upsert(*stored); err != nil {
		t.Fatalf("persist icon path: %v", err)
	}

	req := httptest.NewRequest(http.MethodGet, "/api/catalog/icons/"+app.ID, nil)
	req.SetPathValue("id", app.ID)
	rec := httptest.NewRecorder()
	h.IconBytes(rec, req)
	if rec.Code != http.StatusOK {
		t.Fatalf("status = %d body %s", rec.Code, rec.Body.String())
	}
	if rec.Body.String() != string(icon) {
		t.Fatalf("icon body = %q", rec.Body.String())
	}
	if got := rec.Header().Get("Content-Type"); got != "image/png" {
		t.Fatalf("Content-Type = %q", got)
	}
	if got := rec.Header().Get("Access-Control-Allow-Origin"); got != "*" {
		t.Fatalf("ACAO = %q", got)
	}

	// App without an uploaded icon → 404.
	other := seedHostedApp(t, h, "com.example.noicon", "bytes")
	req = httptest.NewRequest(http.MethodGet, "/api/catalog/icons/"+other.ID, nil)
	req.SetPathValue("id", other.ID)
	rec = httptest.NewRecorder()
	h.IconBytes(rec, req)
	if rec.Code != http.StatusNotFound {
		t.Fatalf("missing icon status = %d", rec.Code)
	}
}