/*
 * The MIT License
 * Copyright © 2025 Johns Hopkins University Applied Physics Laboratory
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package terrasaur.fits;

import java.util.ArrayList;
import java.util.List;
import nom.tam.fits.HeaderCard;
import nom.tam.fits.HeaderCardException;
import terrasaur.enums.FitsHeaderType;
import terrasaur.utils.DTMHeader;

/**
 * Factory class that returns List<HeaderCard> where the HeaderCard objects are in the correct order
 * for writing to a fits header. Also contains methods for creating List<HeaderCard> for different
 * sections of a fits header
 *
 * @author espirrc1
 *
 */
public class FitsHeaderFactory {

    private static final String PLANE = "PLANE";
    private static final String COMMENT = "COMMENT";

    public static DTMHeader getDTMHeader(FitsHdr fitsHdr, FitsHeaderType headerType) {

        switch (headerType) {
            case NFTMLN:
                return new NFTmln(fitsHdr);

            case DTMLOCALALTWG:
                return new AltwgLocalDTM(fitsHdr);

            case DTMGLOBALALTWG:
                return new AltwgGlobalDTM(fitsHdr);

            case DTMGLOBALGENERIC:
                return new GenericGlobalDTM(fitsHdr);

            case DTMLOCALGENERIC:
                return new GenericLocalDTM(fitsHdr);

            default:
                return null;
        }
    }

    public static AnciFitsHeader getAnciHeader(FitsHdr fitsHdr, FitsHeaderType headerType) {

        switch (headerType) {
            case ANCIGLOBALGENERIC:
                return new GenericAnciGlobal(fitsHdr);

            case ANCILOCALGENERIC:
                return new GenericAnciLocal(fitsHdr);

            case ANCIGLOBALALTWG:
                return new AltwgAnciGlobal(fitsHdr);

            case ANCIG_FACETRELATION_ALTWG:
                return new AltwgAnciGlobalFacetRelation(fitsHdr);

            case ANCILOCALALTWG:
                return new AltwgAnciLocal(fitsHdr);

            default:
                return null;
        }
    }

    /**
     * Fits Header block that contains information about the fits header itself. Ex. Header version
     * number.
     *
     * @param fitsHdr
     * @return
     * @throws HeaderCardException
     */
    public static List<HeaderCard> getHeaderInfo(FitsHeader fitsHdr) throws HeaderCardException {

        List<HeaderCard> headers = new ArrayList<HeaderCard>();
        headers.add(new HeaderCard(COMMENT, "header information", false));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.HDRVERS));

        return headers;
    }

    /**
     * Fits header block that contains information about the mission Ex. MISSION name, HOST name,
     * Target name.
     *
     * @param fitsHdr
     * @return
     * @throws HeaderCardException
     */
    public static List<HeaderCard> getMissionInfo(FitsHeader fitsHdr) throws HeaderCardException {

        List<HeaderCard> headers = new ArrayList<HeaderCard>();
        headers.add(new HeaderCard(COMMENT, "mission information", false));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.MISSION));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.HOSTNAME));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.TARGET));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.ORIGIN));

        return headers;
    }

    /**
     * Fits header block that contains ID information, i.e. information that would uniquely identify
     * the data product.
     *
     * @param fitsHdr
     * @return
     * @throws HeaderCardException
     */
    public static List<HeaderCard> getIdInfo(FitsHeader fitsHdr) throws HeaderCardException {
        List<HeaderCard> headers = new ArrayList<HeaderCard>();
        headers.add(new HeaderCard(COMMENT, "identification info", false));

        // check latest Map Format SIS revision to see if SPOC handles these keywords
        headers.add(fitsHdr.getHeaderCard(HeaderTag.SPOC_ID));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.SDPAREA));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.SDPDESC));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.MPHASE));

        return headers;
    }

    /**
     * Fits header block that contains information about the source shape model used to create the
     * fits file.
     *
     * @param fitsHdr
     * @return
     * @throws HeaderCardException
     */
    public static List<HeaderCard> getShapeSourceInfo(FitsHeader fitsHdr) throws HeaderCardException {
        List<HeaderCard> headers = new ArrayList<HeaderCard>();
        headers.add(new HeaderCard(COMMENT, "shape data source", false));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.DATASRC));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.DATASRCF));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.DATASRCV));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.DATASRCS));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.DATASRCD));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.OBJ_FILE));

        return headers;
    }

    public static List<HeaderCard> getProcInfo(FitsHeader fitsHdr) throws HeaderCardException {
        List<HeaderCard> headers = new ArrayList<HeaderCard>();
        headers.add(new HeaderCard(COMMENT, "processing information", false));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.PRODNAME));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.DATEPRD));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.SOFTWARE));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.SOFT_VER));

        return headers;
    }

    public static List<HeaderCard> getMapSpecificInfo(FitsHeader fitsHdr) throws HeaderCardException {

        List<HeaderCard> headers = new ArrayList<HeaderCard>();
        headers.add(new HeaderCard(COMMENT, "map specific information", false));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.MAP_NAME));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.MAP_VER));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.MAP_TYPE));

        return headers;

        // check latest Map Format SIS revision to see if SPOC handles these keywords
        // MAP_PROJ*
        // GSD*
        // GSDI*
    }

    public static List<HeaderCard> getSummarySpatialInfo(FitsHeader fitsHdr, FitsHeaderType fitsHeaderType)
            throws HeaderCardException {

        List<HeaderCard> headers = new ArrayList<HeaderCard>();

        // this section common to all fitsHeaderTypes
        headers.add(new HeaderCard(COMMENT, "summary spatial information", false));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.CLON));
        headers.add(fitsHdr.getHeaderCard(HeaderTag.CLAT));

        switch (fitsHeaderType) {
            case ANCILOCALGENERIC:
                headers.add(fitsHdr.getHeaderCard(HeaderTag.LLCLNG));
                headers.add(fitsHdr.getHeaderCard(HeaderTag.LLCLAT));
                headers.add(fitsHdr.getHeaderCard(HeaderTag.URCLNG));
                headers.add(fitsHdr.getHeaderCard(HeaderTag.URCLAT));
                headers.add(fitsHdr.getHeaderCard(HeaderTag.LRCLNG));
                headers.add(fitsHdr.getHeaderCard(HeaderTag.LRCLAT));
                headers.add(fitsHdr.getHeaderCard(HeaderTag.ULCLNG));
                headers.add(fitsHdr.getHeaderCard(HeaderTag.ULCLAT));
                break;

            default:
                // default does nothing because switch only handles specific cases.
                break;
        }
        return headers;
    }
}