package aw

import (
	"context"
	"encoding/json"
	"io"
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestEnsureBucketPostsCreate(t *testing.T) {
	var gotPath string
	var gotBody map[string]string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		if r.Method != http.MethodPost {
			t.Errorf("method = %q, want POST", r.Method)
		}
		b, _ := io.ReadAll(r.Body)
		_ = json.Unmarshal(b, &gotBody)
		w.WriteHeader(http.StatusOK)
	}))
	defer srv.Close()

	c := New(srv.URL)
	if err := c.EnsureBucket(context.Background(), "keel.events", "keel.event", "keel"); err != nil {
		t.Fatalf("EnsureBucket: %v", err)
	}
	if gotPath != "/api/0/buckets/keel.events" {
		t.Fatalf("path = %q", gotPath)
	}
	if gotBody["type"] != "keel.event" || gotBody["client"] != "keel" {
		t.Fatalf("body = %+v", gotBody)
	}
}

func TestEnsureBucketTreatsExistsAsOK(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusNotModified) // AW returns 304 when the bucket exists
	}))
	defer srv.Close()
	if err := New(srv.URL).EnsureBucket(context.Background(), "keel.events", "keel.event", "keel"); err != nil {
		t.Fatalf("existing bucket should be OK, got %v", err)
	}
}

func TestEnsureBucketErrorsOnServerError(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusInternalServerError)
	}))
	defer srv.Close()
	if err := New(srv.URL).EnsureBucket(context.Background(), "keel.events", "keel.event", "keel"); err == nil {
		t.Fatal("expected error on 500")
	}
}