package common_test

import (
	"reflect"
	"testing"
	"go.uber.org/mock/gomock"

	"src.opensuse.org/autogits/common"
)

func TestGitUrlParse(t *testing.T) {
	tests := []struct {
		name     string
		inputUrl string
		url      common.GitUrl

		error bool
	}{
		{
			name:  "Empty string",
			error: true,
		},
		{
			name: "OpenSUSE HTTPS Url",
			url: common.GitUrl{
				Org:  "foo",
				Repo: "b",
			},
			inputUrl: "https://src.opensuse.org/foo/b.git",
		},
		{
			name: "OpenSUSE HTTPS Url",
			url: common.GitUrl{
				Org:  "a",
				Repo: "b",
			},
			inputUrl: "https://src.opensuse.org/a/b",
		},
		{
			name: "OpenSUSE HTTPS Url",
			url: common.GitUrl{
				Org:    "foo",
				Repo:   "bar",
				Commit: "main",
			},
			inputUrl: "https://src.opensuse.org/foo/bar.git#main",
		},
		{
			name:     "invalid OpenSUSE HTTPS Url",
			inputUrl: "https://src.opensuse.org/bar.git#main",
			error:    true,
		},
		{
			name: "OpenSUSE SSH Url",
			url: common.GitUrl{
				Org:    "foo",
				Repo:   "bar",
				Commit: "main",
			},
			inputUrl: "ssh://src.opensuse.org/foo/bar.git#main",
		},
		{
			name:     "SSH native OpenSUSE Url",
			inputUrl: "gitea@src.opensuse.org:foo/bar.git#main",
			url: common.GitUrl{
				Org:    "foo",
				Repo:   "bar",
				Commit: "main",
			},
		},
		{
			name:     "SSH native OpenSUSE Url without user",
			inputUrl: "src.opensuse.org:foo/bar.git#main",
			url: common.GitUrl{
				Org:    "foo",
				Repo:   "bar",
				Commit: "main",
			},
		},
		{
			name:     "invalid SSH native OpenSUSE Url without user",
			inputUrl: "src.opensuse.org:/br.it",
			error:    true,
		},
		{
			name:     "SSH native OpenSUSE Url without user",
			inputUrl: "src.opensuse.org:foo/bar#main",
			url: common.GitUrl{
				Org:    "foo",
				Repo:   "bar",
				Commit: "main",
			},
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			url, err := common.ParseGitRemoteUrl(test.inputUrl)
			if test.error && err != nil {
				return
			}

			if test.error && err == nil {
				t.Fatal("Expected an error but received", *url)
			} else if !test.error && err != nil {
				t.Error(err)
			}

			if url == nil {
				t.Fatal("Recieved nil. Expected", test.url)
			} else if *url != test.url {
				t.Fatalf("Expected %v but received %v", test.url, *url)
			}
		})
	}
}

func TestRemoteName(t *testing.T) {
	tests := []struct {
		name       string
		giturl     *common.GitUrl
		remotename string
	}{
		{
			name:       "empty",
			remotename: "origin",
		},
		{
			name: "regular repo",
			giturl: &common.GitUrl{
				Org:    "org1",
				Repo:   "repo2",
				Commit: "main",
			},
			remotename: "org1_repo2",
		},
		{
			name: "regular repo with upper case",
			giturl: &common.GitUrl{
				Org:  "Org1",
				Repo: "REPO2",
			},
			remotename: "org1_repo2",
		},
		{
			name: "no org",
			giturl: &common.GitUrl{
				Repo: "REPO2",
			},
			remotename: "origin",
		},
		{
			name: "no repo",
			giturl: &common.GitUrl{
				Org: "ORG2",
			},
			remotename: "origin",
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			n := test.giturl.RemoteName()
			if n != test.remotename {
				t.Errorf("Expected '%s' but received '%s'", test.remotename, n)
			}
		})
	}
}

func TestRemovedBranchName(t *testing.T) {
	tests := []struct {
		name        string
		branchName  string
		isRemoved   bool
		regularName string
	}{
		{
			name: "Empty branch",
		},
		{
			name:        "Removed suffix only",
			branchName:  "-rm",
			isRemoved:   false,
			regularName: "-rm",
		},
		{
			name:        "Capital suffix",
			branchName:  "Foo-Rm",
			isRemoved:   true,
			regularName: "Foo",
		},
		{
			name:        "Other suffixes",
			isRemoved:   true,
			branchName:  "Goo-Rm-DeleteD",
			regularName: "Goo-Rm",
		},
		{
			name:        "Other suffixes",
			isRemoved:   true,
			branchName:  "main-REMOVED",
			regularName: "main",
		},
		{
			name:        "Not removed separator",
			isRemoved:   false,
			branchName:  "main;REMOVED",
			regularName: "main;REMOVED",
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			if r := common.IsRemovedBranch(test.branchName); r != test.isRemoved {
				t.Error("Expecting isRemoved:", test.isRemoved, "but received", r)
			}

			if tn := common.TrimRemovedBranchSuffix(test.branchName); tn != test.regularName {
				t.Error("Expected stripped branch name to be:", test.regularName, "but have:", tn)
			}
		})
	}
}

func TestSplitStringNoEmpty(t *testing.T) {
	tests := []struct {
		name     string
		input    string
		sep      string
		expected []string
	}{
		{"Empty string", "", ",", []string{}},
		{"Only separators", ",,,", ",", []string{}},
		{"Spaces and separators", " , , ", ",", []string{}},
		{"Normal split", "a,b,c", ",", []string{"a", "b", "c"}},
		{"Leading/trailing spaces", "  a  ,  b  ", ",", []string{"a", "b"}},
		{"Multiple separators", "a,,b", ",", []string{"a", "b"}},
		{"Newlines", "line1\n\nline2", "\n", []string{"line1", "line2"}},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			res := common.SplitStringNoEmpty(test.input, test.sep)
			if !reflect.DeepEqual(res, test.expected) {
				t.Errorf("SplitStringNoEmpty(%q, %q) = %v; want %v", test.input, test.sep, res, test.expected)
			}
		})
	}
}

func TestTranslateHttpsToSshUrl(t *testing.T) {
	tests := []struct {
		name     string
		input    string
		expected string
		err      bool
	}{
		{"Opensuse HTTPS", "https://src.opensuse.org/org/repo", "ssh://gitea@src.opensuse.org/org/repo", false},
		{"Suse HTTPS", "https://src.suse.de/org/repo", "ssh://gitea@src.suse.de/org/repo", false},
		{"Already SSH", "ssh://gitea@src.opensuse.org/org/repo", "ssh://gitea@src.opensuse.org/org/repo", false},
		{"Native SSH", "gitea@src.opensuse.org:org/repo", "gitea@src.opensuse.org:org/repo", false},
		{"Unknown URL", "https://github.com/org/repo", "", true},
		{"Empty URL", "", "", true},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			res, err := common.TranslateHttpsToSshUrl(test.input)
			if (err != nil) != test.err {
				t.Errorf("TranslateHttpsToSshUrl(%q) error = %v; want error %v", test.input, err, test.err)
			}
			if res != test.expected {
				t.Errorf("TranslateHttpsToSshUrl(%q) = %q; want %q", test.input, res, test.expected)
			}
		})
	}
}

func TestNewPackageIssueParsing(t *testing.T) {
	tests := []struct {
		name   string
		input  string
		issues *common.NewRepos
	}{
		{
			name: "Nothing",
		},
		{
			name:  "Basic repo",
			input: "org/repo#branch",
			issues: &common.NewRepos{
				Repos: []struct{ Organization, Repository, Branch, PackageName string }{
					{Organization: "org", Repository: "repo", Branch: "branch", PackageName: "repo"},
				},
			},
		},
		{
			name:  "Default branch and junk lines and approval for maintainership",
			input: "\n\nsome comments\n\norg1/repo2\n\nmaintainership: yes",
			issues: &common.NewRepos{
				Repos: []struct{ Organization, Repository, Branch, PackageName string }{
					{Organization: "org1", Repository: "repo2", Branch: "", PackageName: "repo2"},
				},
				IsMaintainer: true,
			},
		},
		{
			name:  "Default branch and junk lines and no maintainership",
			input: "\n\nsome comments\n\norg1/repo2\n\nmaintainership: NEVER",
			issues: &common.NewRepos{
				Repos: []struct{ Organization, Repository, Branch, PackageName string }{
					{Organization: "org1", Repository: "repo2", Branch: "", PackageName: "repo2"},
				},
			},
		},
		{
			name:  "3 repos with comments and maintainership",
			input: "\n\nsome comments for org1/repo2 are here and more\n\norg1/repo2#master\n    org2/repo3#master\n   some/repo3#m\nMaintainer ok",
			issues: &common.NewRepos{
				Repos: []struct{ Organization, Repository, Branch, PackageName string }{
					{Organization: "org1", Repository: "repo2", Branch: "master", PackageName: "repo2"},
					{Organization: "org2", Repository: "repo3", Branch: "master", PackageName: "repo3"},
					{Organization: "some", Repository: "repo3", Branch: "m", PackageName: "repo3"},
				},
				IsMaintainer: true,
			},
		},
		{
			name:  "Invalid repos with spaces",
			input: "or g/repo#branch\norg/r epo#branch\norg/repo#br anch\norg/repo#branch As foo ++",
		},
		{
			name:  "Valid repos with spaces",
			input: " org / repo # branch",
			issues: &common.NewRepos{
				Repos: []struct{ Organization, Repository, Branch, PackageName string }{
					{Organization: "org", Repository: "repo", Branch: "branch", PackageName: "repo"},
				},
			},
		},
		{
			name:  "Package name is not repo name",
			input: " org / repo # branch    as  repo++ \nmaintainer true",
			issues: &common.NewRepos{
				Repos: []struct{ Organization, Repository, Branch, PackageName string }{
					{Organization: "org", Repository: "repo", Branch: "branch", PackageName: "repo++"},
				},
				IsMaintainer: true,
			},
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			issue := common.FindNewReposInIssueBody(test.input)
			if !reflect.DeepEqual(test.issues, issue) {
				t.Error("Expected", test.issues, "but have", issue)
			}
		})
	}
}

func TestGetEnvOverride(t *testing.T) {
	t.Run("GetEnvOverrideString", func(t *testing.T) {
		tests := []struct {
			envValue string
			def      string
			expected string
		}{
			{"", "default", "default"},
			{"override", "default", "override"},
		}

		for _, test := range tests {
			if res := common.GetEnvOverrideString(test.envValue, test.def); res != test.expected {
				t.Errorf("GetEnvOverrideString(%q, %q) = %q; want %q", test.envValue, test.def, res, test.expected)
			}
		}
	})

	t.Run("GetEnvOverrideBool", func(t *testing.T) {
		tests := []struct {
			name     string
			envValue string
			def      bool
			expected bool
		}{
			{"Empty env value, default false", "", false, false},
			{"Empty env value, default true", "", true, true},
			{"Env '1', default false", "1", false, true},
			{"Env '2', default false", "2", false, true},
			{"Env '0', default false", "0", false, false},
			{"Env 'invalid', default true", "abc", true, false},
			{"Env 'true', default false", "true", false, true},
			{"Env 'YES', default false", "YES", false, true},
			{"Env '0', default true", "0", true, false},
			{"Env 'false', default true", "false", true, false},
			{"Env 'FALSE', default true", "FALSE", true, false},
			{"Env '  true  ', default false", "  true  ", false, true},
			{"Env 'no', default true", "no", true, false},
			{"Env 'NO', default true", "NO", true, false},
			{"Env 'off', default true", "off", true, false},
			{"Env 'on', default false", "on", false, true},
			{"Env 'invalid', default false", "tbc", false, false},
			{"Env 'garbage', default false", "!@#$", false, false},
		}

		for _, test := range tests {
			t.Run(test.name, func(t *testing.T) {
				if res := common.GetEnvOverrideBool(test.envValue, test.def); res != test.expected {
					t.Errorf("GetEnvOverrideBool(%q, %v) = %v; want %v", test.envValue, test.def, res, test.expected)
				}
			})
		}
	})
}

func NewController(t *testing.T) *gomock.Controller {
	common.SetTestLogger(t)
	return gomock.NewController(t)
}