package mode

import (
	"fmt"
	"testing"
)

var testCases = []struct {
	name         string
	file         *DownloadFile
	input        string
	expectedMode Mode
	expectedURL  string
}{
	{
		name:         "sync",
		file:         &DownloadFile{Mode: Sync},
		input:        "github.com/gomods/athens",
		expectedMode: Sync,
	},
	{
		name:         "redirect",
		file:         &DownloadFile{Mode: Redirect, DownloadURL: "gomods.io"},
		input:        "github.com/gomods/athens",
		expectedMode: Redirect,
		expectedURL:  "gomods.io",
	},
	{
		name:         "redirect with download url suffix",
		file:         &DownloadFile{Mode: Redirect, DownloadURL: "internal.domain/repository/gonexus"},
		input:        "github.com/gomods/athens",
		expectedMode: Redirect,
		expectedURL:  "internal.domain/repository/gonexus",
	},
	{
		name: "pattern match",
		file: &DownloadFile{
			Mode: Sync,
			Paths: []*DownloadPath{
				{Pattern: "github.com/gomods/*", Mode: None},
			},
		},
		input:        "github.com/gomods/athens",
		expectedMode: None,
	},
	{
		name: "multiple depth pattern match",
		file: &DownloadFile{
			Mode: Sync,
			Paths: []*DownloadPath{
				{Pattern: "github.com/*", Mode: None},
			},
		},
		input:        "github.com/gomods/athens/pkg/mode",
		expectedMode: None,
	},
	{
		name: "subdomain pattern match",
		file: &DownloadFile{
			Mode: Sync,
			Paths: []*DownloadPath{
				{Pattern: "*.github.com/gomods/*", Mode: None},
			},
		},
		input:        "athens.github.com/gomods/pkg/mode",
		expectedMode: None,
	},
	{
		name: "pattern fallback",
		file: &DownloadFile{
			Mode: Sync,
			Paths: []*DownloadPath{
				{Pattern: "github.com/gomods/*", Mode: None},
			},
		},
		input:        "github.com/athens-artifacts/maturelib",
		expectedMode: Sync,
	},
	{
		name: "pattern redirect",
		file: &DownloadFile{
			Mode: Sync,
			Paths: []*DownloadPath{
				{
					Pattern:     "github.com/gomods/*",
					Mode:        AsyncRedirect,
					DownloadURL: "gomods.io",
				},
			},
		},
		input:        "github.com/gomods/athens",
		expectedMode: AsyncRedirect,
		expectedURL:  "gomods.io",
	},
	{
		name: "redirect fallback",
		file: &DownloadFile{
			Mode:        Redirect,
			DownloadURL: "proxy.golang.org",
			Paths: []*DownloadPath{
				{
					Pattern:     "github.com/gomods/*",
					Mode:        AsyncRedirect,
					DownloadURL: "gomods.io",
				},
			},
		},
		input:        "github.com/athens-artifacts/maturelib",
		expectedMode: Redirect,
		expectedURL:  "proxy.golang.org",
	},
}

func TestMode(t *testing.T) {
	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			givenMode := tc.file.Match(tc.input)
			if givenMode != tc.expectedMode {
				t.Fatalf("expected matched mode to be %q but got %q", tc.expectedMode, givenMode)
			}
			givenURL := tc.file.URL(tc.input)
			if givenURL != tc.expectedURL {
				t.Fatalf("expected matched DownloadURL to be %q but got %q", tc.expectedURL, givenURL)
			}
		})
	}
}

func TestNewFile_err(t *testing.T) {
	tc := []struct {
		name     string
		mode     Mode
		expected string
	}{
		{
			name:     "empty mode",
			mode:     "",
			expected: downloadModeErr,
		},
		{
			name:     "invalid mode",
			mode:     "invalidMode",
			expected: fmt.Sprintf(invalidModeErr, "invalidMode"),
		},
	}
	for _, c := range tc {
		t.Run(c.name, func(subT *testing.T) {
			_, err := NewFile(c.mode, "github.com/gomods/athens")
			if err.Error() != c.expected {
				t.Fatalf("expected error %s from NewFile, got %s", c.expected, err.Error())
			}
		})
	}
}