import {
    HttpStatusCode,
    IHttp,
    IModify,
    IPersistence,
    IRead,
} from "@rocket.chat/apps-engine/definition/accessors";
import {
    ApiEndpoint,
    IApiEndpointInfo,
    IApiRequest,
    IApiResponse,
} from "@rocket.chat/apps-engine/definition/api";
import { SCIMUser } from "./scim/User";

export class UserEndpoint extends ApiEndpoint {
    public path = "Users/:id";

    public async get(
        request: IApiRequest,
        endpoint: IApiEndpointInfo,
        read: IRead,
        modify: IModify,
        http: IHttp,
        persis: IPersistence
    ): Promise<IApiResponse> {
        let user: SCIMUser;
        try {
            const response = await http.get(
                `http://localhost:3000/api/v1/users.info?userId=` +
                    request.params.id,
                {
                    headers: {
                        ...(await this.getAuthHeaders(read)),
                        "Content-Type": "application/json",
                    },
                }
            );
            if (!response.content) throw new Error("Empty response");
            const o = JSON.parse(response.content);
            if (!o.success) throw new Error(o.error);
            user = SCIMUser.fromRC(o.user);
        } catch (e) {
            return {
                headers: {
                    "Content-Type": "application/scim+json",
                },
                status: HttpStatusCode.BAD_REQUEST,
                content: { message: e.message },
            };
        }
        return {
            headers: {
                "Content-Type": "application/scim+json",
            },
            status: HttpStatusCode.OK,
            content: user,
        };
    }

    public async put(
        request: IApiRequest,
        endpoint: IApiEndpointInfo,
        read: IRead,
        modify: IModify,
        http: IHttp,
        persis: IPersistence
    ): Promise<IApiResponse> {
        let user: SCIMUser;
        try {
            const response = await http.post(
                "http://localhost:3000/api/v1/users.update",
                {
                    headers: {
                        ...(await this.getAuthHeaders(read)),
                        "Content-Type": "application/json",
                    },
                    content: JSON.stringify(
                        this.scimToUserUpdate(
                            request.params.id,
                            SCIMUser.fromPlain(request.content)
                        )
                    ),
                }
            );
            if (!response.content) throw new Error("Empty response");
            const o = JSON.parse(response.content);
            if (!o.success) throw new Error(o.error);
            user = SCIMUser.fromRC(o.user);
        } catch (e) {
            return {
                headers: {
                    "Content-Type": "application/scim+json",
                },
                status: HttpStatusCode.BAD_REQUEST,
                content: { message: e.message },
            };
        }
        return {
            headers: {
                "Content-Type": "application/scim+json",
            },
            status: HttpStatusCode.OK,
            content: user,
        };
    }

    public async delete(
        request: IApiRequest,
        endpoint: IApiEndpointInfo,
        read: IRead,
        modify: IModify,
        http: IHttp,
        persis: IPersistence
    ): Promise<IApiResponse> {
        let d: IUserDelete = {
            userId: request.params.id,
            confirmRelinquish: true,
        };
        try {
            const response = await http.post(
                "http://localhost:3000/api/v1/users.delete",
                {
                    headers: {
                        ...(await this.getAuthHeaders(read)),
                        "Content-Type": "application/json",
                    },
                    content: JSON.stringify(d),
                }
            );
            if (!response.content) throw new Error("Empty response");
            const o = JSON.parse(response.content);
            if (!o.success) throw new Error(o.error);
        } catch (e) {
            return {
                headers: {
                    "Content-Type": "application/scim+json",
                },
                status: HttpStatusCode.BAD_REQUEST,
                content: { message: e.message },
            };
        }
        return {
            headers: {
                "Content-Type": "application/scim+json",
            },
            status: HttpStatusCode.NO_CONTENT,
        };
    }

    private async getAuthHeaders(
        read: IRead
    ): Promise<{ [key: string]: string }> {
        return {
            "X-User-Id": await read
                .getEnvironmentReader()
                .getSettings()
                .getValueById("rc-user-id"),
            "X-Auth-Token": await read
                .getEnvironmentReader()
                .getSettings()
                .getValueById("rc-token"),
        };
    }

    private scimToUserUpdate(userId: string, user: SCIMUser): IUserUpdate {
        return {
            userId,
            data: {
                email: user.getEmail(),
                name: user.displayName,
                username: user.userName,
                active: user.active,
                verified: true,
                customFields: {
                    scimExternalId: user.externalId,
                },
            },
        };
    }
}