/* eslint-disable @typescript-eslint/no-unsafe-assignment */
import { ForbiddenError, subject } from "@casl/ability";
import { requestContext } from "@fastify/request-context";
import { AxiosError } from "axios";
import RE2 from "re2";

import { AccessScope, ActionProjectType, IdentityAuthMethod, OrganizationActionScope } from "@app/db/schemas";
import { TLicenseServiceFactory } from "@app/ee/services/license/license-service";
import { OrgPermissionIdentityActions, OrgPermissionSubjects } from "@app/ee/services/permission/org-permission";
import {
  constructPermissionErrorMessage,
  validatePrivilegeChangeOperation
} from "@app/ee/services/permission/permission-fns";
import { TPermissionServiceFactory } from "@app/ee/services/permission/permission-service-types";
import { ProjectPermissionIdentityActions, ProjectPermissionSub } from "@app/ee/services/permission/project-permission";
import { getConfig } from "@app/lib/config/env";
import { request } from "@app/lib/config/request";
import { crypto } from "@app/lib/crypto";
import {
  BadRequestError,
  ForbiddenRequestError,
  NotFoundError,
  PermissionBoundaryError,
  UnauthorizedError
} from "@app/lib/errors";
import { extractIPDetails, isValidIpOrCidr } from "@app/lib/ip";
import { logger } from "@app/lib/logger";
import { AuthAttemptAuthMethod, AuthAttemptAuthResult, authAttemptCounter } from "@app/lib/telemetry/metrics";

import { ActorType, AuthTokenType } from "../auth/auth-type";
import { TIdentityDALFactory } from "../identity/identity-dal";
import { TIdentityAccessTokenDALFactory } from "../identity-access-token/identity-access-token-dal";
import { TIdentityAccessTokenJwtPayload } from "../identity-access-token/identity-access-token-types";
import { TMembershipIdentityDALFactory } from "../membership-identity/membership-identity-dal";
import { TOrgDALFactory } from "../org/org-dal";
import { validateIdentityUpdateForSuperAdminPrivileges } from "../super-admin/super-admin-fns";
import { TIdentityOciAuthDALFactory } from "./identity-oci-auth-dal";
import {
  TAttachOciAuthDTO,
  TGetOciAuthDTO,
  TLoginOciAuthDTO,
  TOciGetUserResponse,
  TRevokeOciAuthDTO,
  TUpdateOciAuthDTO
} from "./identity-oci-auth-types";

type TIdentityOciAuthServiceFactoryDep = {
  identityDAL: Pick<TIdentityDALFactory, "findById">;
  identityAccessTokenDAL: Pick<TIdentityAccessTokenDALFactory, "create" | "delete">;
  identityOciAuthDAL: Pick<TIdentityOciAuthDALFactory, "findOne" | "transaction" | "create" | "updateById" | "delete">;
  membershipIdentityDAL: Pick<TMembershipIdentityDALFactory, "findOne" | "update" | "getIdentityById">;
  licenseService: Pick<TLicenseServiceFactory, "getPlan">;
  permissionService: Pick<TPermissionServiceFactory, "getOrgPermission" | "getProjectPermission">;
  orgDAL: Pick<TOrgDALFactory, "findById">;
};

export type TIdentityOciAuthServiceFactory = ReturnType<typeof identityOciAuthServiceFactory>;

export const identityOciAuthServiceFactory = ({
  identityDAL,
  identityAccessTokenDAL,
  identityOciAuthDAL,
  membershipIdentityDAL,
  licenseService,
  permissionService,
  orgDAL
}: TIdentityOciAuthServiceFactoryDep) => {
  const login = async ({ identityId, headers, userOcid }: TLoginOciAuthDTO) => {
    const appCfg = getConfig();
    const identityOciAuth = await identityOciAuthDAL.findOne({ identityId });
    if (!identityOciAuth) {
      throw new NotFoundError({ message: "OCI auth method not found for identity, did you configure OCI auth?" });
    }

    const identity = await identityDAL.findById(identityOciAuth.identityId);
    if (!identity) throw new UnauthorizedError({ message: "Identity not found" });

    const org = await orgDAL.findById(identity.orgId);
    try {
      // Validate OCI host format. Ensures that the host is in "identity.<region>.oraclecloud.com" format.
      if (!headers.host || !new RE2("^identity\\.([a-z]{2}-[a-z]+-[1-9])\\.oraclecloud\\.com$").test(headers.host)) {
        throw new BadRequestError({
          message: "Invalid OCI host format. Expected format: identity.<region>.oraclecloud.com"
        });
      }

      const { data } = await request
        .get<TOciGetUserResponse>(`https://${headers.host}/20160918/users/${userOcid}`, {
          headers
        })
        .catch((err: AxiosError) => {
          logger.error(err.response, "OciIdentityLogin: Failed to authenticate with Oracle Cloud");
          throw err;
        });

      if (data.compartmentId !== identityOciAuth.tenancyOcid) {
        throw new UnauthorizedError({
          message: "Access denied: OCI account isn't part of tenancy."
        });
      }

      if (identityOciAuth.allowedUsernames) {
        const isAccountAllowed = identityOciAuth.allowedUsernames.split(",").some((name) => name.trim() === data.name);

        if (!isAccountAllowed)
          throw new UnauthorizedError({
            message: "Access denied: OCI account username not allowed."
          });
      }

      // Generate the token
      const identityAccessToken = await identityOciAuthDAL.transaction(async (tx) => {
        await membershipIdentityDAL.update(
          identity.projectId
            ? {
                scope: AccessScope.Project,
                scopeOrgId: identity.orgId,
                scopeProjectId: identity.projectId,
                actorIdentityId: identity.id
              }
            : {
                scope: AccessScope.Organization,
                scopeOrgId: identity.orgId,
                actorIdentityId: identity.id
              },
          {
            lastLoginAuthMethod: IdentityAuthMethod.OCI_AUTH,
            lastLoginTime: new Date()
          },
          tx
        );
        const newToken = await identityAccessTokenDAL.create(
          {
            identityId: identityOciAuth.identityId,
            isAccessTokenRevoked: false,
            accessTokenTTL: identityOciAuth.accessTokenTTL,
            accessTokenMaxTTL: identityOciAuth.accessTokenMaxTTL,
            accessTokenNumUses: 0,
            accessTokenNumUsesLimit: identityOciAuth.accessTokenNumUsesLimit,
            authMethod: IdentityAuthMethod.OCI_AUTH
          },
          tx
        );
        return newToken;
      });

      const accessToken = crypto.jwt().sign(
        {
          identityId: identityOciAuth.identityId,
          identityAccessTokenId: identityAccessToken.id,
          authTokenType: AuthTokenType.IDENTITY_ACCESS_TOKEN
        } as TIdentityAccessTokenJwtPayload,
        appCfg.AUTH_SECRET,
        Number(identityAccessToken.accessTokenTTL) === 0
          ? undefined
          : {
              expiresIn: Number(identityAccessToken.accessTokenTTL)
            }
      );

      if (appCfg.OTEL_TELEMETRY_COLLECTION_ENABLED) {
        authAttemptCounter.add(1, {
          "infisical.identity.id": identityOciAuth.identityId,
          "infisical.identity.name": identity.name,
          "infisical.organization.id": org.id,
          "infisical.organization.name": org.name,
          "infisical.identity.auth_method": AuthAttemptAuthMethod.OCI_AUTH,
          "infisical.identity.auth_result": AuthAttemptAuthResult.SUCCESS,
          "client.address": requestContext.get("ip"),
          "user_agent.original": requestContext.get("userAgent")
        });
      }

      return {
        identityOciAuth,
        accessToken,
        identityAccessToken,
        identity
      };
    } catch (error) {
      if (appCfg.OTEL_TELEMETRY_COLLECTION_ENABLED) {
        authAttemptCounter.add(1, {
          "infisical.identity.id": identityOciAuth.identityId,
          "infisical.identity.name": identity.name,
          "infisical.organization.id": org.id,
          "infisical.organization.name": org.name,
          "infisical.identity.auth_method": AuthAttemptAuthMethod.OCI_AUTH,
          "infisical.identity.auth_result": AuthAttemptAuthResult.FAILURE,
          "client.address": requestContext.get("ip"),
          "user_agent.original": requestContext.get("userAgent")
        });
      }
      throw error;
    }
  };

  const attachOciAuth = async ({
    identityId,
    tenancyOcid,
    allowedUsernames,
    accessTokenTTL,
    accessTokenMaxTTL,
    accessTokenNumUsesLimit,
    accessTokenTrustedIps,
    actorId,
    actorAuthMethod,
    actor,
    actorOrgId,
    isActorSuperAdmin
  }: TAttachOciAuthDTO) => {
    await validateIdentityUpdateForSuperAdminPrivileges(identityId, isActorSuperAdmin);

    const identityMembershipOrg = await membershipIdentityDAL.getIdentityById({
      scopeData: {
        scope: AccessScope.Organization,
        orgId: actorOrgId
      },
      identityId
    });
    if (!identityMembershipOrg) throw new NotFoundError({ message: `Failed to find identity with ID ${identityId}` });
    if (identityMembershipOrg.identity.orgId !== actorOrgId) {
      throw new ForbiddenRequestError({ message: "Sub organization not authorized to access this identity" });
    }

    if (identityMembershipOrg.identity.authMethods.includes(IdentityAuthMethod.OCI_AUTH)) {
      throw new BadRequestError({
        message: "Failed to add OCI Auth to already configured identity"
      });
    }

    if (accessTokenMaxTTL > 0 && accessTokenTTL > accessTokenMaxTTL) {
      throw new BadRequestError({ message: "Access token TTL cannot be greater than max TTL" });
    }

    if (identityMembershipOrg.identity.projectId) {
      const { permission } = await permissionService.getProjectPermission({
        actionProjectType: ActionProjectType.Any,
        actor,
        actorId,
        projectId: identityMembershipOrg.identity.projectId,
        actorAuthMethod,
        actorOrgId
      });

      ForbiddenError.from(permission).throwUnlessCan(
        ProjectPermissionIdentityActions.Create,
        subject(ProjectPermissionSub.Identity, { identityId })
      );
    } else {
      const { permission } = await permissionService.getOrgPermission({
        scope: OrganizationActionScope.Any,
        actor,
        actorId,
        orgId: identityMembershipOrg.scopeOrgId,
        actorAuthMethod,
        actorOrgId
      });
      ForbiddenError.from(permission).throwUnlessCan(
        OrgPermissionIdentityActions.Create,
        OrgPermissionSubjects.Identity
      );
    }

    const plan = await licenseService.getPlan(identityMembershipOrg.scopeOrgId);
    const reformattedAccessTokenTrustedIps = accessTokenTrustedIps.map((accessTokenTrustedIp) => {
      if (
        !plan.ipAllowlisting &&
        accessTokenTrustedIp.ipAddress !== "0.0.0.0/0" &&
        accessTokenTrustedIp.ipAddress !== "::/0"
      )
        throw new BadRequestError({
          message:
            "Failed to add IP access range to access token due to plan restriction. Upgrade plan to add IP access range."
        });
      if (!isValidIpOrCidr(accessTokenTrustedIp.ipAddress))
        throw new BadRequestError({
          message: "The IP is not a valid IPv4, IPv6, or CIDR block"
        });
      return extractIPDetails(accessTokenTrustedIp.ipAddress);
    });

    const identityOciAuth = await identityOciAuthDAL.transaction(async (tx) => {
      const doc = await identityOciAuthDAL.create(
        {
          identityId: identityMembershipOrg.identity.id,
          type: "iam",
          tenancyOcid,
          allowedUsernames,
          accessTokenMaxTTL,
          accessTokenTTL,
          accessTokenNumUsesLimit,
          accessTokenTrustedIps: JSON.stringify(reformattedAccessTokenTrustedIps)
        },
        tx
      );
      return doc;
    });
    return { ...identityOciAuth, orgId: identityMembershipOrg.scopeOrgId };
  };

  const updateOciAuth = async ({
    identityId,
    tenancyOcid,
    allowedUsernames,
    accessTokenTTL,
    accessTokenMaxTTL,
    accessTokenNumUsesLimit,
    accessTokenTrustedIps,
    actorId,
    actorAuthMethod,
    actor,
    actorOrgId
  }: TUpdateOciAuthDTO) => {
    const identityMembershipOrg = await membershipIdentityDAL.getIdentityById({
      scopeData: {
        scope: AccessScope.Organization,
        orgId: actorOrgId
      },
      identityId
    });
    if (!identityMembershipOrg) throw new NotFoundError({ message: `Failed to find identity with ID ${identityId}` });
    if (identityMembershipOrg.identity.orgId !== actorOrgId) {
      throw new ForbiddenRequestError({ message: "Sub organization not authorized to access this identity" });
    }

    if (!identityMembershipOrg.identity.authMethods.includes(IdentityAuthMethod.OCI_AUTH)) {
      throw new NotFoundError({
        message: "The identity does not have OCI Auth attached"
      });
    }

    const identityOciAuth = await identityOciAuthDAL.findOne({ identityId });

    if (
      (accessTokenMaxTTL || identityOciAuth.accessTokenMaxTTL) > 0 &&
      (accessTokenTTL || identityOciAuth.accessTokenTTL) > (accessTokenMaxTTL || identityOciAuth.accessTokenMaxTTL)
    ) {
      throw new BadRequestError({ message: "Access token TTL cannot be greater than max TTL" });
    }

    if (identityMembershipOrg.identity.projectId) {
      const { permission } = await permissionService.getProjectPermission({
        actionProjectType: ActionProjectType.Any,
        actor,
        actorId,
        projectId: identityMembershipOrg.identity.projectId,
        actorAuthMethod,
        actorOrgId
      });

      ForbiddenError.from(permission).throwUnlessCan(
        ProjectPermissionIdentityActions.Edit,
        subject(ProjectPermissionSub.Identity, { identityId })
      );
    } else {
      const { permission } = await permissionService.getOrgPermission({
        scope: OrganizationActionScope.Any,
        actor,
        actorId,
        orgId: identityMembershipOrg.scopeOrgId,
        actorAuthMethod,
        actorOrgId
      });
      ForbiddenError.from(permission).throwUnlessCan(OrgPermissionIdentityActions.Edit, OrgPermissionSubjects.Identity);
    }

    const plan = await licenseService.getPlan(identityMembershipOrg.scopeOrgId);
    const reformattedAccessTokenTrustedIps = accessTokenTrustedIps?.map((accessTokenTrustedIp) => {
      if (
        !plan.ipAllowlisting &&
        accessTokenTrustedIp.ipAddress !== "0.0.0.0/0" &&
        accessTokenTrustedIp.ipAddress !== "::/0"
      )
        throw new BadRequestError({
          message:
            "Failed to add IP access range to access token due to plan restriction. Upgrade plan to add IP access range."
        });
      if (!isValidIpOrCidr(accessTokenTrustedIp.ipAddress))
        throw new BadRequestError({
          message: "The IP is not a valid IPv4, IPv6, or CIDR block"
        });
      return extractIPDetails(accessTokenTrustedIp.ipAddress);
    });

    const updatedOciAuth = await identityOciAuthDAL.updateById(identityOciAuth.id, {
      tenancyOcid,
      allowedUsernames,
      accessTokenMaxTTL,
      accessTokenTTL,
      accessTokenNumUsesLimit,
      accessTokenTrustedIps: reformattedAccessTokenTrustedIps
        ? JSON.stringify(reformattedAccessTokenTrustedIps)
        : undefined
    });

    return { ...updatedOciAuth, orgId: identityMembershipOrg.scopeOrgId };
  };

  const getOciAuth = async ({ identityId, actorId, actor, actorAuthMethod, actorOrgId }: TGetOciAuthDTO) => {
    const identityMembershipOrg = await membershipIdentityDAL.getIdentityById({
      scopeData: {
        scope: AccessScope.Organization,
        orgId: actorOrgId
      },
      identityId
    });
    if (!identityMembershipOrg) throw new NotFoundError({ message: `Failed to find identity with ID ${identityId}` });
    if (identityMembershipOrg.identity.orgId !== actorOrgId) {
      throw new ForbiddenRequestError({ message: "Sub organization not authorized to access this identity" });
    }

    if (!identityMembershipOrg.identity.authMethods.includes(IdentityAuthMethod.OCI_AUTH)) {
      throw new BadRequestError({
        message: "The identity does not have OCI Auth attached"
      });
    }

    const ociIdentityAuth = await identityOciAuthDAL.findOne({ identityId });

    if (identityMembershipOrg.identity.projectId) {
      const { permission } = await permissionService.getProjectPermission({
        actionProjectType: ActionProjectType.Any,
        actor,
        actorId,
        projectId: identityMembershipOrg.identity.projectId,
        actorAuthMethod,
        actorOrgId
      });

      ForbiddenError.from(permission).throwUnlessCan(
        ProjectPermissionIdentityActions.Read,
        subject(ProjectPermissionSub.Identity, { identityId })
      );
    } else {
      const { permission } = await permissionService.getOrgPermission({
        scope: OrganizationActionScope.Any,
        actor,
        actorId,
        orgId: identityMembershipOrg.scopeOrgId,
        actorAuthMethod,
        actorOrgId
      });
      ForbiddenError.from(permission).throwUnlessCan(OrgPermissionIdentityActions.Read, OrgPermissionSubjects.Identity);
    }
    return { ...ociIdentityAuth, orgId: identityMembershipOrg.scopeOrgId };
  };

  const revokeIdentityOciAuth = async ({
    identityId,
    actorId,
    actor,
    actorAuthMethod,
    actorOrgId
  }: TRevokeOciAuthDTO) => {
    const identityMembershipOrg = await membershipIdentityDAL.getIdentityById({
      scopeData: {
        scope: AccessScope.Organization,
        orgId: actorOrgId
      },
      identityId
    });
    if (!identityMembershipOrg) throw new NotFoundError({ message: `Failed to find identity with ID ${identityId}` });
    if (identityMembershipOrg.identity.orgId !== actorOrgId) {
      throw new ForbiddenRequestError({ message: "Sub organization not authorized to access this identity" });
    }
    if (!identityMembershipOrg.identity.authMethods.includes(IdentityAuthMethod.OCI_AUTH)) {
      throw new BadRequestError({
        message: "The identity does not have OCI auth"
      });
    }

    if (identityMembershipOrg.identity.projectId) {
      const { permission } = await permissionService.getProjectPermission({
        actionProjectType: ActionProjectType.Any,
        actor,
        actorId,
        projectId: identityMembershipOrg.identity.projectId,
        actorAuthMethod,
        actorOrgId
      });

      ForbiddenError.from(permission).throwUnlessCan(
        ProjectPermissionIdentityActions.RevokeAuth,
        subject(ProjectPermissionSub.Identity, { identityId })
      );
    } else {
      const { permission } = await permissionService.getOrgPermission({
        scope: OrganizationActionScope.Any,
        actor,
        actorId,
        orgId: identityMembershipOrg.scopeOrgId,
        actorAuthMethod,
        actorOrgId
      });
      ForbiddenError.from(permission).throwUnlessCan(OrgPermissionIdentityActions.Edit, OrgPermissionSubjects.Identity);

      const { permission: rolePermission } = await permissionService.getOrgPermission({
        actor: ActorType.IDENTITY,
        actorId: identityMembershipOrg.identity.id,
        orgId: identityMembershipOrg.scopeOrgId,
        actorAuthMethod,
        actorOrgId,
        scope: OrganizationActionScope.Any
      });

      const { shouldUseNewPrivilegeSystem } = await orgDAL.findById(actorOrgId);
      const permissionBoundary = validatePrivilegeChangeOperation(
        shouldUseNewPrivilegeSystem,
        OrgPermissionIdentityActions.RevokeAuth,
        OrgPermissionSubjects.Identity,
        permission,
        rolePermission
      );

      if (!permissionBoundary.isValid)
        throw new PermissionBoundaryError({
          message: constructPermissionErrorMessage(
            "Failed to revoke OCI auth of identity with more privileged role",
            shouldUseNewPrivilegeSystem,
            OrgPermissionIdentityActions.RevokeAuth,
            OrgPermissionSubjects.Identity
          ),
          details: { missingPermissions: permissionBoundary.missingPermissions }
        });
    }

    const revokedIdentityOciAuth = await identityOciAuthDAL.transaction(async (tx) => {
      const deletedOciAuth = await identityOciAuthDAL.delete({ identityId }, tx);
      await identityAccessTokenDAL.delete({ identityId, authMethod: IdentityAuthMethod.OCI_AUTH }, tx);

      return { ...deletedOciAuth?.[0], orgId: identityMembershipOrg.scopeOrgId };
    });
    return revokedIdentityOciAuth;
  };

  return {
    login,
    attachOciAuth,
    updateOciAuth,
    getOciAuth,
    revokeIdentityOciAuth
  };
};