gitpod/components/gitpod-protocol/src/protocol.ts

/**
 * Copyright (c) 2020 Gitpod GmbH. All rights reserved.
 * Licensed under the GNU Affero General Public License (AGPL).
 * See License-AGPL.txt in the project root for license information.
 */

import { WorkspaceInstance, PortVisibility } from "./workspace-instance";
import { RoleOrPermission } from "./permission";
import { Project } from "./teams-projects-protocol";
import { createHash } from "crypto";

export interface UserInfo {
    name?: string;
}

export interface User {
    /** The user id */
    id: string;

    /** The timestamp when the user entry was created */
    creationDate: string;

    avatarUrl?: string;

    name?: string;

    /** Optional for backwards compatibility */
    fullName?: string;

    identities: Identity[];

    /**
     * Whether the user has been blocked to use our service, because of TOS violation for example.
     * Optional for backwards compatibility.
     */
    blocked?: boolean;

    /** A map of random settings that alter the behaviour of Gitpod on a per-user basis */
    featureFlags?: UserFeatureSettings;

    /** The permissions and/or roles the user has */
    rolesOrPermissions?: RoleOrPermission[];

    /** Whether the user is logical deleted. This flag is respected by all queries in UserDB */
    markedDeleted?: boolean;

    additionalData?: AdditionalUserData;
}

export namespace User {
    export function is(data: any): data is User {
        return data && data.hasOwnProperty("id") && data.hasOwnProperty("identities");
    }
    export function getIdentity(user: User, authProviderId: string): Identity | undefined {
        return user.identities.find((id) => id.authProviderId === authProviderId);
    }
    export function censor(user: User): User {
        const res = { ...user };
        delete res.additionalData;
        res.identities = res.identities.map((i) => {
            delete i.tokens;

            // The user field is not in the Identity shape, but actually exists on DBIdentity.
            // Trying to push this object out via JSON RPC will fail because of the cyclic nature
            // of this field.
            delete (i as any).user;
            return i;
        });
        return res;
    }

    /**
     * Tries to return the primaryEmail of the first identity this user signed up with.
     * @param user
     * @returns A primaryEmail, or undefined if there is none.
     */
    export function getPrimaryEmail(user: User): string | undefined {
        const identities = user.identities.filter((i) => !!i.primaryEmail);
        if (identities.length <= 0) {
            return undefined;
        }

        return identities[0].primaryEmail || undefined;
    }
    export function getName(user: User): string | undefined {
        const name = user.fullName || user.name;
        if (name) {
            return name;
        }

        for (const id of user.identities) {
            if (id.authName !== "") {
                return id.authName;
            }
        }
        return undefined;
    }
}

export interface AdditionalUserData {
    platforms?: UserPlatform[];
    emailNotificationSettings?: EmailNotificationSettings;
    featurePreview?: boolean;
    ideSettings?: IDESettings;
    // key is the name of the news, string the iso date when it was seen
    whatsNewSeen?: { [key: string]: string };
    // key is the name of the OAuth client i.e. local app, string the iso date when it was approved
    // TODO(rl): provide a management UX to allow rescinding of approval
    oauthClientsApproved?: { [key: string]: string };
    // to remember GH Orgs the user installed/updated the GH App for
    knownGitHubOrgs?: string[];

    // Git clone URL pointing to the user's dotfile repo
    dotfileRepo?: string;
}

export interface EmailNotificationSettings {
    allowsChangelogMail?: boolean;
    allowsDevXMail?: boolean;
    allowsOnboardingMail?: boolean;
}

export type IDESettings = {
    settingVersion?: string;
    defaultIde?: string;
    // DEPRECATED: Use defaultIde after `settingVersion: 2.0`, no more specialify desktop or browser.
    useDesktopIde?: boolean;
    // DEPRECATED: Same with useDesktopIde.
    defaultDesktopIde?: string;
    useLatestVersion?: boolean;
};

export interface UserPlatform {
    uid: string;
    userAgent: string;
    browser: string;
    os: string;
    lastUsed: string;
    firstUsed: string;
    /**
     * Since when does the user have the browser extension installe don this device.
     */
    browserExtensionInstalledSince?: string;

    /**
     * Since when does the user not have the browser extension installed anymore (but previously had).
     */
    browserExtensionUninstalledSince?: string;
}

export interface UserFeatureSettings {
    /**
     * Permanent feature flags are added to each and every workspace instance
     * this user starts.
     */
    permanentWSFeatureFlags?: NamedWorkspaceFeatureFlag[];
}

/**
 * The values of this type MUST MATCH enum values in WorkspaceFeatureFlag from ws-manager/client/core_pb.d.ts
 * If they don't we'll break things during workspace startup.
 */
export const WorkspaceFeatureFlags = {
    full_workspace_backup: undefined,
    fixed_resources: undefined,
    persistent_volume_claim: undefined,
};
export type NamedWorkspaceFeatureFlag = keyof typeof WorkspaceFeatureFlags;

export interface EnvVarWithValue {
    name: string;
    value: string;
}

export interface ProjectEnvVarWithValue extends EnvVarWithValue {
    id: string;
    projectId: string;
    censored: boolean;
}

export type ProjectEnvVar = Omit<ProjectEnvVarWithValue, "value">;

export interface UserEnvVarValue extends EnvVarWithValue {
    id?: string;
    repositoryPattern: string; // DEPRECATED: Use ProjectEnvVar instead of repositoryPattern - https://github.com/gitpod-com/gitpod/issues/5322
}
export interface UserEnvVar extends UserEnvVarValue {
    id: string;
    userId: string;
    deleted?: boolean;
}

export namespace UserEnvVar {
    /**
     * @param variable
     * @returns Either a string containing an error message or undefined.
     */
    export function validate(variable: UserEnvVarValue): string | undefined {
        const name = variable.name;
        const pattern = variable.repositoryPattern;
        if (name.trim() === "") {
            return "Name must not be empty.";
        }
        if (!/^[a-zA-Z_]+[a-zA-Z0-9_]*$/.test(name)) {
            return "Name must match /^[a-zA-Z_]+[a-zA-Z0-9_]*$/.";
        }
        if (variable.value.trim() === "") {
            return "Value must not be empty.";
        }
        if (pattern.trim() === "") {
            return "Scope must not be empty.";
        }
        const split = pattern.split("/");
        if (split.length < 2) {
            return "A scope must use the form 'organization/repo'.";
        }
        for (const name of split) {
            if (name !== "*") {
                if (!/^[a-zA-Z0-9_\-.\*]+$/.test(name)) {
                    return "Invalid scope segment. Only ASCII characters, numbers, -, _, . or * are allowed.";
                }
            }
        }
        return undefined;
    }

    // DEPRECATED: Use ProjectEnvVar instead of repositoryPattern - https://github.com/gitpod-com/gitpod/issues/5322
    export function normalizeRepoPattern(pattern: string) {
        return pattern.toLocaleLowerCase();
    }

    // DEPRECATED: Use ProjectEnvVar instead of repositoryPattern - https://github.com/gitpod-com/gitpod/issues/5322
    export function score(value: UserEnvVarValue): number {
        // We use a score to enforce precedence:
        //      value/value = 0
        //      value/*     = 1
        //      */value     = 2
        //      */*         = 3
        //      #/#         = 4 (used for env vars passed through the URL)
        // the lower the score, the higher the precedence.
        const [ownerPattern, repoPattern] = splitRepositoryPattern(value.repositoryPattern);
        let score = 0;
        if (repoPattern == "*") {
            score += 1;
        }
        if (ownerPattern == "*") {
            score += 2;
        }
        if (ownerPattern == "#" || repoPattern == "#") {
            score = 4;
        }
        return score;
    }

    // DEPRECATED: Use ProjectEnvVar instead of repositoryPattern - https://github.com/gitpod-com/gitpod/issues/5322
    export function filter<T extends UserEnvVarValue>(vars: T[], owner: string, repo: string): T[] {
        let result = vars.filter((e) => {
            const [ownerPattern, repoPattern] = splitRepositoryPattern(e.repositoryPattern);
            if (ownerPattern !== "*" && ownerPattern !== "#" && !!owner && ownerPattern !== owner.toLocaleLowerCase()) {
                return false;
            }
            if (repoPattern !== "*" && repoPattern !== "#" && !!repo && repoPattern !== repo.toLocaleLowerCase()) {
                return false;
            }
            return true;
        });

        const resmap = new Map<string, T[]>();
        result.forEach((e) => {
            const l = resmap.get(e.name) || [];
            l.push(e);
            resmap.set(e.name, l);
        });

        result = [];
        for (const name of resmap.keys()) {
            const candidates = resmap.get(name);
            if (!candidates) {
                // not sure how this can happen, but so be it
                continue;
            }

            if (candidates.length == 1) {
                result.push(candidates[0]);
                continue;
            }

            let minscore = 10;
            let bestCandidate: T | undefined;
            for (const e of candidates) {
                const score = UserEnvVar.score(e);
                if (!bestCandidate || score < minscore) {
                    minscore = score;
                    bestCandidate = e;
                }
            }
            result.push(bestCandidate!);
        }

        return result;
    }

    // DEPRECATED: Use ProjectEnvVar instead of repositoryPattern - https://github.com/gitpod-com/gitpod/issues/5322
    export function splitRepositoryPattern(repositoryPattern: string): string[] {
        const patterns = repositoryPattern.split("/");
        const repoPattern = patterns.slice(1).join("/");
        const ownerPattern = patterns[0];
        return [ownerPattern, repoPattern];
    }
}

export interface GitpodToken {
    /** Hash value (SHA256) of the token (primary key). */
    tokenHash: string;

    /** Human readable name of the token */
    name?: string;

    /** Token kind */
    type: GitpodTokenType;

    /** The user the token belongs to. */
    user: User;

    /** Scopes (e.g. limition to read-only) */
    scopes: string[];

    /** Created timestamp */
    created: string;

    // token is deleted on the database and about to be collected by db-sync
    deleted?: boolean;
}

export enum GitpodTokenType {
    API_AUTH_TOKEN = 0,
    MACHINE_AUTH_TOKEN = 1,
}

export interface OneTimeSecret {
    id: string;

    value: string;

    expirationTime: string;

    deleted: boolean;
}

export interface WorkspaceInstanceUser {
    name?: string;
    avatarUrl?: string;
    instanceId: string;
    userId: string;
    lastSeen: string;
}

export interface Identity {
    authProviderId: string;
    authId: string;
    authName: string;
    primaryEmail?: string;
    /** @deprecated */
    tokens?: Token[];
    /** This is a flag that triggers the HARD DELETION of this entity */
    deleted?: boolean;
    // readonly identities cannot be modified by the user
    readonly?: boolean;
}

export type IdentityLookup = Pick<Identity, "authProviderId" | "authId">;

export namespace Identity {
    export function is(data: any): data is Identity {
        return (
            data.hasOwnProperty("authProviderId") && data.hasOwnProperty("authId") && data.hasOwnProperty("authName")
        );
    }
    export function equals(id1: IdentityLookup, id2: IdentityLookup) {
        return id1.authProviderId === id2.authProviderId && id1.authId === id2.authId;
    }
}

export interface Token {
    value: string;
    scopes: string[];
    updateDate?: string;
    expiryDate?: string;
    idToken?: string;
    refreshToken?: string;
    username?: string;
}
export interface TokenEntry {
    uid: string;
    authProviderId: string;
    authId: string;
    token: Token;
    expiryDate?: string;
    refreshable?: boolean;
    /** This is a flag that triggers the HARD DELETION of this entity */
    deleted?: boolean;
}

export interface EmailDomainFilterEntry {
    domain: string;
    negative: boolean;
}

export interface EduEmailDomain {
    domain: string;
}

export type AppInstallationPlatform = "github";
export type AppInstallationState = "claimed.user" | "claimed.platform" | "installed" | "uninstalled";
export interface AppInstallation {
    platform: AppInstallationPlatform;
    installationID: string;
    ownerUserID?: string;
    platformUserID?: string;
    state: AppInstallationState;
    creationTime: string;
    lastUpdateTime: string;
}

export interface PendingGithubEvent {
    id: string;
    githubUserId: string;
    creationDate: Date;
    type: string;
    event: string;
}

export interface Snapshot {
    id: string;
    creationTime: string;
    availableTime?: string;
    originalWorkspaceId: string;
    bucketId: string;
    layoutData?: string;
    state: SnapshotState;
    message?: string;
}

export type SnapshotState = "pending" | "available" | "error";

export interface LayoutData {
    workspaceId: string;
    lastUpdatedTime: string;
    layoutData: string;
}

export interface Workspace {
    id: string;
    creationTime: string;
    contextURL: string;
    description: string;
    ownerId: string;
    projectId?: string;
    context: WorkspaceContext;
    config: WorkspaceConfig;

    /**
     * The source where to get the workspace base image from. This source is resolved
     * during workspace creation. Once a base image has been built the information in here
     * is superseded by baseImageNameResolved.
     */
    imageSource?: WorkspaceImageSource;

    /**
     * The resolved, fix name of the workspace image. We only use this
     * to access the logs during an image build.
     */
    imageNameResolved?: string;

    /**
     * The resolved/built fixed named of the base image. This field is only set if the workspace
     * already has its base image built.
     */
    baseImageNameResolved?: string;

    shareable?: boolean;
    pinned?: boolean;

    // workspace is hard-deleted on the database and about to be collected by db-sync
    readonly deleted?: boolean;

    /**
     * Mark as deleted (user-facing). The actual deletion of the workspace content is executed
     * with a (configurable) delay
     */
    softDeleted?: WorkspaceSoftDeletion;

    /**
     * Marks the time when the workspace was marked as softDeleted. The actual deletion of the
     * workspace content happens after a configurable period
     */
    softDeletedTime?: string;

    /**
     * Marks the time when the workspace content has been deleted.
     */
    contentDeletedTime?: string;

    type: WorkspaceType;

    basedOnPrebuildId?: string;

    basedOnSnapshotId?: string;
}

export type WorkspaceSoftDeletion = "user" | "gc";

export type WorkspaceType = "regular" | "prebuild" | "probe";

export namespace Workspace {
    export function getFullRepositoryName(ws: Workspace): string | undefined {
        if (CommitContext.is(ws.context)) {
            return ws.context.repository.owner + "/" + ws.context.repository.name;
        }
        return undefined;
    }

    export function getFullRepositoryUrl(ws: Workspace): string | undefined {
        if (CommitContext.is(ws.context)) {
            return `https://${ws.context.repository.host}/${getFullRepositoryName(ws)}`;
        }
        return undefined;
    }

    export function getPullRequestNumber(ws: Workspace): number | undefined {
        if (PullRequestContext.is(ws.context)) {
            return ws.context.nr;
        }
        return undefined;
    }

    export function getIssueNumber(ws: Workspace): number | undefined {
        if (IssueContext.is(ws.context)) {
            return ws.context.nr;
        }
        return undefined;
    }

    export function getBranchName(ws: Workspace): string | undefined {
        if (CommitContext.is(ws.context)) {
            return ws.context.ref;
        }
        return undefined;
    }

    export function getCommit(ws: Workspace): string | undefined {
        if (CommitContext.is(ws.context)) {
            return ws.context.revision && ws.context.revision.substr(0, 8);
        }
        return undefined;
    }
}

export interface GuessGitTokenScopesParams {
    host: string;
    repoUrl: string;
    gitCommand: string;
    currentToken: GitToken;
}

export interface GitToken {
    token: string;
    user: string;
    scopes: string[];
}

export interface GuessedGitTokenScopes {
    message?: string;
    scopes?: string[];
}

export interface VSCodeConfig {
    extensions?: string[];
}

export interface RepositoryCloneInformation {
    url: string;
    checkoutLocation?: string;
}

export interface WorkspaceConfig {
    mainConfiguration?: string;
    additionalRepositories?: RepositoryCloneInformation[];
    image?: ImageConfig;
    ports?: PortConfig[];
    tasks?: TaskConfig[];
    checkoutLocation?: string;
    workspaceLocation?: string;
    gitConfig?: { [config: string]: string };
    github?: GithubAppConfig;
    vscode?: VSCodeConfig;

    /** deprecated. Enabled by default **/
    experimentalNetwork?: boolean;

    /**
     * Where the config object originates from.
     *
     * repo - from the repository
     * project-db - from the "Project" stored in the database
     * definitly-gp - from github.com/gitpod-io/definitely-gp
     * derived - computed based on analyzing the repository
     * additional-content - config comes from additional content, usually provided through the project's configuration
     * default - our static catch-all default config
     */
    _origin?: "repo" | "project-db" | "definitely-gp" | "derived" | "additional-content" | "default";

    /**
     * Set of automatically infered feature flags. That's not something the user can set, but
     * that is set by gitpod at workspace creation time.
     */
    _featureFlags?: NamedWorkspaceFeatureFlag[];
}

export interface GithubAppConfig {
    prebuilds?: GithubAppPrebuildConfig;
}
export interface GithubAppPrebuildConfig {
    master?: boolean;
    branches?: boolean;
    pullRequests?: boolean;
    pullRequestsFromForks?: boolean;
    addCheck?: boolean | "prevent-merge-on-error";
    addBadge?: boolean;
    addLabel?: boolean | string;
    addComment?: boolean;
}
export namespace GithubAppPrebuildConfig {
    export function is(obj: boolean | GithubAppPrebuildConfig): obj is GithubAppPrebuildConfig {
        return !(typeof obj === "boolean");
    }
}

export type WorkspaceImageSource = WorkspaceImageSourceDocker | WorkspaceImageSourceReference;
export interface WorkspaceImageSourceDocker {
    dockerFilePath: string;
    dockerFileHash: string;
    dockerFileSource?: Commit;
}
export namespace WorkspaceImageSourceDocker {
    export function is(obj: object): obj is WorkspaceImageSourceDocker {
        return "dockerFileHash" in obj && "dockerFilePath" in obj;
    }
}
export interface WorkspaceImageSourceReference {
    /** The resolved, fix base image reference */
    baseImageResolved: string;
}
export namespace WorkspaceImageSourceReference {
    export function is(obj: object): obj is WorkspaceImageSourceReference {
        return "baseImageResolved" in obj;
    }
}

export type PrebuiltWorkspaceState =
    // the prebuild is queued and may start at anytime
    | "queued"
    // the workspace prebuild is currently running (i.e. there's a workspace pod deployed)
    | "building"
    // the prebuild was aborted
    | "aborted"
    // the prebuild timed out
    | "timeout"
    // the prebuild has finished (even if a headless task failed) and a snapshot is available
    | "available"
    // the prebuild (headless workspace) failed due to some system error
    | "failed";

export interface PrebuiltWorkspace {
    id: string;
    cloneURL: string;
    branch?: string;
    projectId?: string;
    commit: string;
    buildWorkspaceId: string;
    creationTime: string;
    state: PrebuiltWorkspaceState;
    statusVersion: number;
    error?: string;
    snapshot?: string;
}

export namespace PrebuiltWorkspace {
    export function isDone(pws: PrebuiltWorkspace) {
        return pws.state === "available" || pws.state === "timeout" || pws.state === "aborted";
    }

    export function isAvailable(pws: PrebuiltWorkspace) {
        return pws.state === "available" && !!pws.snapshot;
    }

    export function buildDidSucceed(pws: PrebuiltWorkspace) {
        return pws.state === "available" && !pws.error;
    }
}

export interface PrebuiltWorkspaceUpdatable {
    id: string;
    prebuiltWorkspaceId: string;
    owner: string;
    repo: string;
    isResolved: boolean;
    installationId: string;
    /**
     * the commitSHA of the commit that triggered the prebuild
     */
    commitSHA?: string;
    issue?: string;
    contextUrl?: string;
}

export interface WhitelistedRepository {
    url: string;
    name: string;
    description?: string;
    avatar?: string;
}

export type PortOnOpen = "open-browser" | "open-preview" | "notify" | "ignore";

export interface PortConfig {
    port: number;
    onOpen?: PortOnOpen;
    visibility?: PortVisibility;
    description?: string;
    name?: string;
}
export namespace PortConfig {
    export function is(config: any): config is PortConfig {
        return config && "port" in config && typeof config.port === "number";
    }
}

export interface PortRangeConfig {
    port: string;
    onOpen?: PortOnOpen;
}
export namespace PortRangeConfig {
    export function is(config: any): config is PortRangeConfig {
        return config && "port" in config && (typeof config.port === "string" || config.port instanceof String);
    }
}

export interface TaskConfig {
    name?: string;
    before?: string;
    init?: string;
    prebuild?: string;
    command?: string;
    env?: { [env: string]: any };
    openIn?: "bottom" | "main" | "left" | "right";
    openMode?: "split-top" | "split-left" | "split-right" | "split-bottom" | "tab-before" | "tab-after";
}

export namespace TaskConfig {
    export function is(config: any): config is TaskConfig {
        return config && ("command" in config || "init" in config || "before" in config);
    }
}

export namespace WorkspaceImageBuild {
    export type Phase = "BaseImage" | "GitpodLayer" | "Error" | "Done";
    export interface StateInfo {
        phase: Phase;
        currentStep?: number;
        maxSteps?: number;
    }
    export interface LogContent {
        text: string;
        upToLine?: number;
        isDiff?: boolean;
    }
    export type LogCallback = (info: StateInfo, content: LogContent | undefined) => void;
    export namespace LogLine {
        export const DELIMITER = "\r\n";
        export const DELIMITER_REGEX = /\r?\n/;
    }
}

export type ImageConfig = ImageConfigString | ImageConfigFile;
export type ImageConfigString = string;
export namespace ImageConfigString {
    export function is(config: ImageConfig | undefined): config is ImageConfigString {
        return typeof config === "string";
    }
}
export interface ImageConfigFile {
    // Path to the Dockerfile relative to repository root
    file: string;
    // Path to the docker build context relative to repository root
    context?: string;
}
export namespace ImageConfigFile {
    export function is(config: ImageConfig | undefined): config is ImageConfigFile {
        return typeof config === "object" && "file" in config;
    }
}
export interface ExternalImageConfigFile extends ImageConfigFile {
    externalSource: Commit;
}
export namespace ExternalImageConfigFile {
    export function is(config: any | undefined): config is ExternalImageConfigFile {
        return typeof config === "object" && "file" in config && "externalSource" in config;
    }
}

export interface WorkspaceContext {
    title: string;
    /** This contains the URL portion of the contextURL (which might contain other modifiers as well). It's optional because it's not set for older workspaces. */
    normalizedContextURL?: string;
    forceCreateNewWorkspace?: boolean;
    forceImageBuild?: boolean;
}

export namespace WorkspaceContext {
    export function is(context: any): context is WorkspaceContext {
        return context && "title" in context;
    }
}

export interface WithSnapshot {
    snapshotBucketId: string;
}
export namespace WithSnapshot {
    export function is(context: any): context is WithSnapshot {
        return context && "snapshotBucketId" in context;
    }
}

export interface WithPrebuild extends WithSnapshot {
    prebuildWorkspaceId: string;
    wasPrebuilt: true;
}
export namespace WithPrebuild {
    export function is(context: any): context is WithPrebuild {
        return context && WithSnapshot.is(context) && "prebuildWorkspaceId" in context && "wasPrebuilt" in context;
    }
}

/**
 * WithDefaultConfig contexts disable the download of the gitpod.yml from the repository
 * and fall back to the built-in configuration.
 */
export interface WithDefaultConfig {
    withDefaultConfig: true;
}

export namespace WithDefaultConfig {
    export function is(context: any): context is WithDefaultConfig {
        return context && "withDefaultConfig" in context && context.withDefaultConfig;
    }

    export function mark(ctx: WorkspaceContext): WorkspaceContext & WithDefaultConfig {
        return {
            ...ctx,
            withDefaultConfig: true,
        };
    }
}

export interface SnapshotContext extends WorkspaceContext, WithSnapshot {
    snapshotId: string;
}

export namespace SnapshotContext {
    export function is(context: any): context is SnapshotContext {
        return context && WithSnapshot.is(context) && "snapshotId" in context;
    }
}

export interface StartPrebuildContext extends WorkspaceContext {
    actual: WorkspaceContext;
    commitHistory?: string[];
    additionalRepositoryCommitHistories?: {
        cloneUrl: string;
        commitHistory: string[];
    }[];
    project?: Project;
    branch?: string;
}

export namespace StartPrebuildContext {
    export function is(context: any): context is StartPrebuildContext {
        return context && "actual" in context;
    }
}

export interface PrebuiltWorkspaceContext extends WorkspaceContext {
    originalContext: WorkspaceContext;
    prebuiltWorkspace: PrebuiltWorkspace;
    snapshotBucketId?: string;
}

export namespace PrebuiltWorkspaceContext {
    export function is(context: any): context is PrebuiltWorkspaceContext {
        return context && "originalContext" in context && "prebuiltWorkspace" in context;
    }
}

export interface WithReferrerContext extends WorkspaceContext {
    referrer: string;
    referrerIde?: string;
}

export namespace WithReferrerContext {
    export function is(context: any): context is WithReferrerContext {
        return context && "referrer" in context;
    }
}

export interface WithEnvvarsContext extends WorkspaceContext {
    envvars: EnvVarWithValue[];
}

export namespace WithEnvvarsContext {
    export function is(context: any): context is WithEnvvarsContext {
        return context && "envvars" in context;
    }
}

export interface WorkspaceProbeContext extends WorkspaceContext {
    responseURL: string;
    responseToken: string;
}

export namespace WorkspaceProbeContext {
    export function is(context: any): context is WorkspaceProbeContext {
        return context && "responseURL" in context && "responseToken" in context;
    }
}

export type RefType = "branch" | "tag" | "revision";
export namespace RefType {
    export const getRefType = (commit: Commit): RefType => {
        if (!commit.ref) {
            return "revision";
        }
        // This fallback is meant to handle the cases where (for historic reasons) ref is present but refType is missing
        return commit.refType || "branch";
    };
}

export interface Commit {
    repository: Repository;
    revision: string;

    // Might contain either a branch or a tag (determined by refType)
    ref?: string;

    // refType is only set if ref is present (and not for old workspaces, before this feature was added)
    refType?: RefType;
}

export interface AdditionalContentContext extends WorkspaceContext {
    /**
     * utf-8 encoded contents that will be copied on top of the workspace's filesystem
     */
    additionalFiles: { [filePath: string]: string };
}

export namespace AdditionalContentContext {
    export function is(ctx: any): ctx is AdditionalContentContext {
        return "additionalFiles" in ctx;
    }

    export function hasDockerConfig(ctx: any, config: WorkspaceConfig): boolean {
        return is(ctx) && ImageConfigFile.is(config.image) && !!ctx.additionalFiles[config.image.file];
    }
}

export interface CommitContext extends WorkspaceContext, GitCheckoutInfo {
    /** @deprecated Moved to .repository.cloneUrl, left here for backwards-compatibility for old workspace contextes in the DB */
    cloneUrl?: string;

    /**
     * The clone and checkout information for additional repositories in case of multi-repo projects.
     */
    additionalRepositoryCheckoutInfo?: GitCheckoutInfo[];
}

export namespace CommitContext {
    /**
     * Creates a hash for all the commits of the CommitContext and all sub-repo commit infos.
     * The hash is max 255 chars long.
     * @param commitContext
     * @returns hash for commitcontext
     */
    export function computeHash(commitContext: CommitContext): string {
        // for single commits we use the revision to be backward compatible.
        if (
            !commitContext.additionalRepositoryCheckoutInfo ||
            commitContext.additionalRepositoryCheckoutInfo.length === 0
        ) {
            return commitContext.revision;
        }
        const hasher = createHash("sha256");
        hasher.update(commitContext.revision);
        for (const info of commitContext.additionalRepositoryCheckoutInfo) {
            hasher.update(info.revision);
        }
        return hasher.digest("hex");
    }
}

export interface GitCheckoutInfo extends Commit {
    checkoutLocation?: string;
    upstreamRemoteURI?: string;
    localBranch?: string;
}

export namespace CommitContext {
    export function is(commit: any): commit is CommitContext {
        return WorkspaceContext.is(commit) && "repository" in commit && "revision" in commit;
    }
}

export interface PullRequestContext extends CommitContext {
    nr: number;
    ref: string;
    base: {
        repository: Repository;
        ref: string;
    };
}

export namespace PullRequestContext {
    export function is(ctx: any): ctx is PullRequestContext {
        return CommitContext.is(ctx) && "nr" in ctx && "ref" in ctx && "base" in ctx;
    }
}

export interface IssueContext extends CommitContext {
    nr: number;
    ref: string;
    localBranch: string;
}

export namespace IssueContext {
    export function is(ctx: any): ctx is IssueContext {
        return CommitContext.is(ctx) && "nr" in ctx && "ref" in ctx && "localBranch" in ctx;
    }
}

export interface NavigatorContext extends CommitContext {
    path: string;
    isFile: boolean;
}

export namespace NavigatorContext {
    export function is(ctx: any): ctx is NavigatorContext {
        return CommitContext.is(ctx) && "path" in ctx && "isFile" in ctx;
    }
}

export interface Repository {
    host: string;
    owner: string;
    name: string;
    cloneUrl: string;
    /* Optional kind to differentiate between repositories of orgs/groups/projects and personal repos. */
    repoKind?: string;
    description?: string;
    avatarUrl?: string;
    webUrl?: string;
    defaultBranch?: string;
    /** Optional for backwards compatibility */
    private?: boolean;
    fork?: {
        // The direct parent of this fork
        parent: Repository;
    };
}
export interface Branch {
    name: string;
    commit: CommitInfo;
    htmlUrl: string;
}

export interface CommitInfo {
    author: string;
    sha: string;
    commitMessage: string;
    authorAvatarUrl?: string;
    authorDate?: string;
}

export namespace Repository {
    export function fullRepoName(repo: Repository): string {
        return `${repo.host}/${repo.owner}/${repo.name}`;
    }
}

export interface WorkspaceInstancePortsChangedEvent {
    type: "PortsChanged";
    instanceID: string;
    portsOpened: number[];
    portsClosed: number[];
}

export namespace WorkspaceInstancePortsChangedEvent {
    export function is(data: any): data is WorkspaceInstancePortsChangedEvent {
        return data && data.type == "PortsChanged";
    }
}

export interface WorkspaceInfo {
    workspace: Workspace;
    latestInstance?: WorkspaceInstance;
}

export namespace WorkspaceInfo {
    export function lastActiveISODate(info: WorkspaceInfo): string {
        return info.latestInstance?.creationTime || info.workspace.creationTime;
    }
}

export type RunningWorkspaceInfo = WorkspaceInfo & { latestInstance: WorkspaceInstance };

export interface WorkspaceCreationResult {
    createdWorkspaceId?: string;
    workspaceURL?: string;
    existingWorkspaces?: WorkspaceInfo[];
    runningWorkspacePrebuild?: {
        prebuildID: string;
        workspaceID: string;
        instanceID: string;
        starting: RunningWorkspacePrebuildStarting;
        sameCluster: boolean;
    };
    runningPrebuildWorkspaceID?: string;
}
export type RunningWorkspacePrebuildStarting = "queued" | "starting" | "running";

export enum CreateWorkspaceMode {
    // Default returns a running prebuild if there is any, otherwise creates a new workspace (using a prebuild if one is available)
    Default = "default",
    // ForceNew creates a new workspace irrespective of any running prebuilds. This mode is guaranteed to actually create a workspace - but may degrade user experience as currently runnig prebuilds are ignored.
    ForceNew = "force-new",
    // UsePrebuild polls the database waiting for a currently running prebuild to become available. This mode exists to handle the db-sync delay.
    UsePrebuild = "use-prebuild",
    // SelectIfRunning returns a list of currently running workspaces for the context URL if there are any, otherwise falls back to Default mode
    SelectIfRunning = "select-if-running",
}

export namespace WorkspaceCreationResult {
    export function is(data: any): data is WorkspaceCreationResult {
        return (
            data &&
            ("createdWorkspaceId" in data ||
                "existingWorkspaces" in data ||
                "runningWorkspacePrebuild" in data ||
                "runningPrebuildWorkspaceID" in data)
        );
    }
}

export interface UserMessage {
    readonly id: string;
    readonly title?: string;
    /**
     * date from where on this message should be shown
     */
    readonly from?: string;
    readonly content?: string;
    readonly url?: string;
}

export interface AuthProviderInfo {
    readonly authProviderId: string;
    readonly authProviderType: string;
    readonly host: string;
    readonly ownerId?: string;
    readonly verified: boolean;
    readonly isReadonly?: boolean;
    readonly hiddenOnDashboard?: boolean;
    readonly loginContextMatcher?: string;
    readonly disallowLogin?: boolean;
    readonly icon?: string;
    readonly description?: string;

    readonly settingsUrl?: string;
    readonly scopes?: string[];
    readonly requirements?: {
        readonly default: string[];
        readonly publicRepo: string[];
        readonly privateRepo: string[];
    };
}

export interface AuthProviderEntry {
    readonly id: string;
    readonly type: AuthProviderEntry.Type;
    readonly host: string;
    readonly ownerId: string;

    readonly status: AuthProviderEntry.Status;

    readonly oauth: OAuth2Config;
    /** A random string that is to change whenever oauth changes (enforced on DB level) */
    readonly oauthRevision?: string;
}

export interface OAuth2Config {
    readonly clientId: string;
    readonly clientSecret: string;
    readonly callBackUrl: string;
    readonly authorizationUrl: string;
    readonly tokenUrl: string;
    readonly scope?: string;
    readonly scopeSeparator?: string;

    readonly settingsUrl?: string;
    readonly authorizationParams?: { [key: string]: string };
    readonly configURL?: string;
}

export namespace AuthProviderEntry {
    export type Type = "GitHub" | "GitLab" | string;
    export type Status = "pending" | "verified";
    export type NewEntry = Pick<AuthProviderEntry, "ownerId" | "host" | "type"> & {
        clientId?: string;
        clientSecret?: string;
    };
    export type UpdateEntry = Pick<AuthProviderEntry, "id" | "ownerId"> &
        Pick<OAuth2Config, "clientId" | "clientSecret">;
    export function redact(entry: AuthProviderEntry): AuthProviderEntry {
        return {
            ...entry,
            oauth: {
                ...entry.oauth,
                clientSecret: "redacted",
            },
        };
    }
}

export interface Configuration {
    readonly daysBeforeGarbageCollection: number;
    readonly garbageCollectionStartDate: number;
}

export interface TheiaPlugin {
    id: string;
    pluginName: string;
    pluginId?: string;
    /**
     * Id of the user which uploaded this plugin.
     */
    userId?: string;
    bucketName: string;
    path: string;
    hash?: string;
    state: TheiaPlugin.State;
}
export namespace TheiaPlugin {
    export enum State {
        Uploading = "uploading",
        Uploaded = "uploaded",
        CheckinFailed = "checkin-failed",
    }
}

export interface TermsAcceptanceEntry {
    readonly userId: string;
    readonly termsRevision: string;
    readonly acceptionTime: string;
}

export interface Terms {
    readonly revision: string;
    readonly activeSince: string;
    readonly adminOnlyTerms: boolean;
    readonly updateMessage: string;
    readonly content: string;
    readonly formElements?: object;
}