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package de.adorsys.xs2a.adapter.service.ing;

import de.adorsys.xs2a.adapter.service.RequestHeaders;
import de.adorsys.xs2a.adapter.service.exception.BadRequestException;

import java.util.Map;
import java.util.TreeMap;

class Headers {
    @SuppressWarnings("squid:S00115")
    private static final String BEARER_ = "Bearer ";

    private Map headers;

    Headers(Map headers) {
        this.headers = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
        this.headers.putAll(headers);
    }

    public String getAccessToken() {
        String authorization = headers.get("Authorization");
        if (authorization == null || !authorization.startsWith(BEARER_)) {
            throw new BadRequestException("Authorization header value must have type \"Bearer\"");
        }
        return authorization.substring(BEARER_.length());
    }

    public String getRequestId() {
        return headers.get(RequestHeaders.X_REQUEST_ID);
    }

    public String getTppRedirectUri() {
        return headers.get(RequestHeaders.TPP_REDIRECT_URI);
    }

    public String getPsuIpAddress() {
        return headers.get(RequestHeaders.PSU_IP_ADDRESS);
    }
}