package sqlserverflexalphaFlavor

import (
	"context"
	"testing"

	"github.com/stackitcloud/stackit-sdk-go/services/sqlserverflex/v3alpha1api"
)

var mockResp = func(page int64) (*v3alpha1api.GetFlavorsResponse, error) {
	if page == 1 {
		return &v3alpha1api.GetFlavorsResponse{
			Flavors: []v3alpha1api.ListFlavors{
				{Id: "flavor-1", Description: "first"},
				{Id: "flavor-2", Description: "second"},
			},
		}, nil
	}
	if page == 2 {
		return &v3alpha1api.GetFlavorsResponse{
			Flavors: []v3alpha1api.ListFlavors{
				{Id: "flavor-3", Description: "three"},
			},
		}, nil
	}

	return &v3alpha1api.GetFlavorsResponse{
		Flavors: []v3alpha1api.ListFlavors{},
	}, nil
}

func TestGetFlavorsByFilter(t *testing.T) {
	tests := []struct {
		description string
		projectID   string
		region      string
		mockErr     error
		filter      func(v3alpha1api.ListFlavors) bool
		wantCount   int
		wantErr     bool
	}{
		{
			description: "Success - Get all flavors (2 pages)",
			projectID:   "pid", region: "reg",
			filter:    func(_ v3alpha1api.ListFlavors) bool { return true },
			wantCount: 3,
			wantErr:   false,
		},
		{
			description: "Success - Filter flavors by description",
			projectID:   "pid", region: "reg",
			filter:    func(f v3alpha1api.ListFlavors) bool { return f.Description == "first" },
			wantCount: 1,
			wantErr:   false,
		},
		{
			description: "Error - Missing parameters",
			projectID:   "", region: "reg",
			wantErr: true,
		},
	}

	for _, tt := range tests {
		t.Run(
			tt.description, func(t *testing.T) {
				var currentPage int64
				getFlavorsMock := func(_ v3alpha1api.ApiGetFlavorsRequestRequest) (*v3alpha1api.GetFlavorsResponse, error) {
					currentPage++
					return mockResp(currentPage)
				}

				client := v3alpha1api.DefaultAPIServiceMock{
					GetFlavorsRequestExecuteMock: &getFlavorsMock,
				}
				actual, err := getFlavorsByFilter(context.Background(), client, tt.projectID, tt.region, tt.filter)

				if (err != nil) != tt.wantErr {
					t.Errorf("getFlavorsByFilter() error = %v, wantErr %v", err, tt.wantErr)
					return
				}

				if !tt.wantErr && len(actual) != tt.wantCount {
					t.Errorf("getFlavorsByFilter() got %d flavors, want %d", len(actual), tt.wantCount)
				}
			},
		)
	}
}

func TestGetAllFlavors(t *testing.T) {
	var currentPage int64

	getFlavorsMock := func(_ v3alpha1api.ApiGetFlavorsRequestRequest) (*v3alpha1api.GetFlavorsResponse, error) {
		currentPage++
		return mockResp(currentPage)
	}

	client := v3alpha1api.DefaultAPIServiceMock{
		GetFlavorsRequestExecuteMock: &getFlavorsMock,
	}

	res, err := getAllFlavors(context.Background(), client, "pid", "reg")
	if err != nil {
		t.Errorf("getAllFlavors() unexpected error: %v", err)
	}
	if len(res) != 3 {
		t.Errorf("getAllFlavors() expected 3 flavor, got %d", len(res))
	}
}