import { Controller, Get, Header } from "@nestjs/common";
import {
    ApiExcludeController,
    ApiOperation,
    ApiParam,
    ApiProduces,
} from "@nestjs/swagger";
import { Session } from "../session/entities/session.entity";
import { SessionEntity } from "../session/session.decorator";
import { ContentType } from "../utils/mediaType/media-type.decorator";
import { MediaType } from "../utils/mediaType/media-type.enum";
import { JwksResponseDto } from "./dto/jwks-response.dto";
import { Oauth2AuthorizationServerResponse } from "./dto/oauth-authorization-server-response.dto";
import { WellKnownService } from "./well-known.service";

/**
 * Controller for the OpenID4VCI well-known endpoints.
 */
@ApiExcludeController(process.env.SWAGGER_ALL !== "true")
@ApiParam({
    name: "session",
    required: true,
})
@Controller(":session/.well-known")
export class WellKnownController {
    /**
     * Constructor for WellKnownController.
     * @param wellKnownService
     */
    constructor(private readonly wellKnownService: WellKnownService) {}

    /**
     * Retrieves the OpenID4VCI issuer metadata for a given tenant.
     * @param tenantId
     * @param contentType
     * @returns
     */
    @ApiOperation({
        summary: "Get OpenID4VCI issuer metadata",
        description: "Returns the OpenID4VCI issuer metadata.",
    })
    //we can not set the accept in the apiheader via swagger.
    @ApiProduces(MediaType.APPLICATION_JSON, MediaType.APPLICATION_JWT)
    @Get("openid-credential-issuer")
    issuerMetadata(
        @SessionEntity() session: Session,
        @ContentType() contentType: MediaType,
    ) {
        return this.wellKnownService.getIssuerMetadata(session, contentType);
    }

    /**
     * Authorization Server Metadata
     * @returns
     */
    @Get("oauth-authorization-server")
    authzMetadata(
        @SessionEntity() session: Session,
    ): Oauth2AuthorizationServerResponse {
        return this.wellKnownService.getAuthzMetadata(session); //d
    }

    /**
     * Returns the JSON Web Key Set (JWKS) for the authorization server.
     * @returns
     */
    @Header("Content-Type", "application/jwk-set+json")
    @Get("jwks.json")
    getJwks(@SessionEntity() session: Session): Promise<JwksResponseDto> {
        return this.wellKnownService.getJwks(session.tenantId);
    }
}