package server

import (
	"bytes"
	"encoding/json"
	"io"
	"mime/multipart"
	"net/http"
	"net/http/httptest"
	"path/filepath"
	"testing"
)

func TestMediaUploadGetAndContent(t *testing.T) {
	cfg := Config{
		SQLitePath:    filepath.Join(t.TempDir(), "popiart.db"),
		SkillhubDir:   makeEmptySkillhub(t),
		SessionSecret: "test-secret",
	}
	server, err := NewWithConfig(cfg)
	if err != nil {
		t.Fatalf("NewWithConfig: %v", err)
	}
	srv := httptest.NewServer(server.Handler())
	defer srv.Close()
	server.cfg.PublicBaseURL = srv.URL

	sessionToken, _, ok, err := server.store.createSession("sk-media-user")
	if err != nil {
		t.Fatalf("createSession: %v", err)
	}
	if !ok {
		t.Fatal("expected session creation to succeed")
	}

	imageBytes := tinyPNG(t)
	var body bytes.Buffer
	writer := multipart.NewWriter(&body)
	if err := writer.WriteField("project_id", "proj_media_demo"); err != nil {
		t.Fatalf("write project_id field: %v", err)
	}
	if err := writer.WriteField("visibility", "public"); err != nil {
		t.Fatalf("write visibility field: %v", err)
	}
	part, err := writer.CreateFormFile("file", "poster.png")
	if err != nil {
		t.Fatalf("create form file: %v", err)
	}
	if _, err := part.Write(imageBytes); err != nil {
		t.Fatalf("write form file: %v", err)
	}
	if err := writer.Close(); err != nil {
		t.Fatalf("close multipart writer: %v", err)
	}

	req := httptest.NewRequest(http.MethodPost, "/v1/media/upload", &body)
	req.Header.Set("Authorization", "Bearer "+sessionToken)
	req.Header.Set("Content-Type", writer.FormDataContentType())
	rec := httptest.NewRecorder()
	server.Handler().ServeHTTP(rec, req)

	if rec.Code != http.StatusCreated {
		t.Fatalf("expected status 201, got %d body=%s", rec.Code, rec.Body.String())
	}

	var envelope struct {
		OK   bool  `json:"ok"`
		Data media `json:"data"`
	}
	if err := json.Unmarshal(rec.Body.Bytes(), &envelope); err != nil {
		t.Fatalf("decode upload response: %v body=%s", err, rec.Body.String())
	}
	if !envelope.OK {
		t.Fatalf("expected ok upload response, got %s", rec.Body.String())
	}
	if envelope.Data.ID == "" {
		t.Fatalf("expected media id, got %#v", envelope.Data)
	}
	if envelope.Data.URL == "" {
		t.Fatalf("expected stable url, got %#v", envelope.Data)
	}

	getReq := httptest.NewRequest(http.MethodGet, "/v1/media/"+envelope.Data.ID, nil)
	getReq.Header.Set("Authorization", "Bearer "+sessionToken)
	getRec := httptest.NewRecorder()
	server.Handler().ServeHTTP(getRec, getReq)
	if getRec.Code != http.StatusOK {
		t.Fatalf("expected media get 200, got %d body=%s", getRec.Code, getRec.Body.String())
	}

	contentResp, err := http.Get(envelope.Data.URL)
	if err != nil {
		t.Fatalf("GET media content: %v", err)
	}
	defer contentResp.Body.Close()
	if contentResp.StatusCode != http.StatusOK {
		t.Fatalf("expected media content 200, got %d", contentResp.StatusCode)
	}
	content, err := io.ReadAll(contentResp.Body)
	if err != nil {
		t.Fatalf("read content body: %v", err)
	}
	if !bytes.Equal(content, imageBytes) {
		t.Fatal("expected media content bytes to match uploaded file")
	}
}