package slurm

import (
	"context"
	"fmt"
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestSlurmdbInstancesService_GetInstances(t *testing.T) {
	mux := http.NewServeMux()
	mux.HandleFunc("/slurmdb/v0.0.40/instances", func(w http.ResponseWriter, r *http.Request) {
		testMethod(t, r, "GET")
		fmt.Fprint(w, `{"instances": []}`)
	})
	server := httptest.NewServer(mux)
	defer server.Close()

	client, _ := NewClient(server.URL, nil)
	resp, _, err := client.SlurmdbInstances.GetInstances(context.Background(), nil)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if resp == nil {
		t.Fatal("expected non-nil response")
	}
}

func TestSlurmdbInstancesService_GetInstancesWithOptions(t *testing.T) {
	mux := http.NewServeMux()
	mux.HandleFunc("/slurmdb/v0.0.40/instances", func(w http.ResponseWriter, r *http.Request) {
		testMethod(t, r, "GET")
		q := r.URL.Query()
		if q.Get("cluster") != "test-cluster" {
			t.Errorf("expected cluster=test-cluster, got %s", q.Get("cluster"))
		}
		if q.Get("extra") != "some-extra" {
			t.Errorf("expected extra=some-extra, got %s", q.Get("extra"))
		}
		if q.Get("instance_id") != "i-12345" {
			t.Errorf("expected instance_id=i-12345, got %s", q.Get("instance_id"))
		}
		if q.Get("instance_type") != "t2.micro" {
			t.Errorf("expected instance_type=t2.micro, got %s", q.Get("instance_type"))
		}
		fmt.Fprint(w, `{"instances": []}`)
	})
	server := httptest.NewServer(mux)
	defer server.Close()

	client, _ := NewClient(server.URL, nil)
	opts := &GetInstancesOptions{
		Cluster:      Ptr("test-cluster"),
		Extra:        Ptr("some-extra"),
		InstanceID:   Ptr("i-12345"),
		InstanceType: Ptr("t2.micro"),
	}
	resp, _, err := client.SlurmdbInstances.GetInstances(context.Background(), opts)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if resp == nil {
		t.Fatal("expected non-nil response")
	}
}

func TestSlurmdbInstancesService_GetInstance(t *testing.T) {
	mux := http.NewServeMux()
	mux.HandleFunc("/slurmdb/v0.0.40/instance", func(w http.ResponseWriter, r *http.Request) {
		testMethod(t, r, "GET")
		fmt.Fprint(w, `{"instances": []}`)
	})
	server := httptest.NewServer(mux)
	defer server.Close()

	client, _ := NewClient(server.URL, nil)
	resp, _, err := client.SlurmdbInstances.GetInstance(context.Background(), nil)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if resp == nil {
		t.Fatal("expected non-nil response")
	}
}

func TestSlurmdbInstancesService_GetInstances_InvalidURL(t *testing.T) {
	client, _ := NewClient("http://invalid-host-does-not-exist.local", nil)
	_, _, err := client.SlurmdbInstances.GetInstances(context.Background(), nil)
	if err == nil {
		t.Fatal("expected error for invalid URL")
	}
}