package app

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"os"
	"testing"
	"time"

	"github.com/gin-gonic/gin"

	"galo/internal/config"
	"galo/internal/storage"
	"galo/internal/video"
)

func mustSigner(t *testing.T) *storage.Signer {
	t.Helper()
	signer, err := storage.NewSigner("secret", time.Hour, 10*time.Minute)
	if err != nil {
		t.Fatalf("signer: %v", err)
	}
	return signer
}

func TestHealthStorageLabel(t *testing.T) {
	gin.SetMode(gin.TestMode)
	fs, err := storage.NewFS(t.TempDir(), mustSigner(t))
	if err != nil {
		t.Fatalf("fs: %v", err)
	}
	ok := func(context.Context) error { return nil }
	srv := &Server{cfg: &config.Config{}, ping: ok, storage: fs}

	call := func() map[string]any {
		rec := httptest.NewRecorder()
		c, _ := gin.CreateTestContext(rec)
		c.Request = httptest.NewRequest(http.MethodGet, "/api/health", nil)
		srv.health(c)
		var body map[string]any
		if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
			t.Fatalf("decode: %v", err)
		}
		return body
	}

	srv.cfg.Storage.Backend = "fs"
	if body := call(); body["fs"] != "ok" {
		t.Fatalf("expected fs label ok, got %v", body)
	}

	srv.cfg.Storage.Backend = "s3"
	if body := call(); body["s3"] != "ok" {
		t.Fatalf("expected s3 label ok, got %v", body)
	}

	srv.cfg.Storage.Backend = ""
	if body := call(); body["s3"] != "ok" {
		t.Fatalf("expected default s3 label, got %v", body)
	}

	// A missing toolchain reports video unavailable without degrading the service.
	if body := call(); body["video"] != "unavailable" {
		t.Fatalf("expected video unavailable, got %v", body)
	}
	if body := call(); body["status"] != "ok" {
		t.Fatalf("video unavailability must not degrade status, got %v", body)
	}

	// A resolvable toolchain reports video ok. The test binary is a known
	// executable on every platform.
	self, err := os.Executable()
	if err != nil {
		t.Fatalf("executable: %v", err)
	}
	srv.videoTools = video.Detect(config.Video{FFmpegPath: self, FFprobePath: self})
	if body := call(); body["video"] != "ok" {
		t.Fatalf("expected video ok, got %v", body)
	}
}