/*
 * Nested_blocks:
 * Nested Block processing is used to implement both imposition and 
 * personalization with Blocks:
 *
 * - The first-level Block container page contains several large PDF Blocks
 *   which indicate the major areas on the paper to be printed on. The
 *   arrangement of PDF Blocks reflects the intended postprocessing of the
 *   paper (e.g. folding).
 * - Each of the first-level PDF Blocks is then filled with a second-level
 *   container PDF page which contains Text, Image, or PDF Blocks to be filled
 *   with variable text for personalization.
 *
 * Required software: PPS 9
 * Required data:
 * - first-level Block container with PDF Blocks named "Block_<nr>"
 * - second-level Block container with arbitrary Blocks
 * - variable data for filling second-level Blocks (provided in an inline array)
 */
package com.pdflib.cookbook.pdflib.blocks;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class nested_blocks {
    public static void main(String argv[]) {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "nested_blocks.pdf";
        String title = "Nested Blocks";

        pdflib p = null;
        String infilename1 = "A3_imposition_2x2.pdf";
        String infilename2 = "businesscard_blocks.pdf";
        int record, block, inpage1, inpage2, indoc1, indoc2;
        int exitcode = 0;

        int pagespersheet; // number of imposed pages per sheet

        /* Names of the blocks contained in the imported page */
        String blocknames[] = { "name", "business_title",
            "business_address_line1", "business_address_city",
            "business_telephone_voice", "business_telephone_fax",
            "business_email", "business_homepage" };

        int nblocks = blocknames.length; // number of blocks to be filled

        /* Data related to various persons used for personalization */
        String persons[][] = {
            { "Victor Kraxi", "Chief Paper Officer", "17, Aviation Road",
                "Paperfield", "7079-4301", "7079-4391", "victor@kraxi.com",
                "www.kraxi.com" },
            { "Paula Kraxi", "Chief Paper Pilot", "17, Aviation Road",
                "Paperfield", "7079-4302", "7079-4392", "paula@kraxi.com",
                "www.kraxi.com" },
            { "Serge Kraxi", "Chief Paper Folder", "17, Aviation Road",
                "Paperfield", "7079-4303", "7079-4393", "serge@kraxi.com",
                "www.kraxi.com" },
            { "Lena Kraxi", "Chief Financial Officer", "17, Aviation Road",
                "Paperfield", "7079-4304", "7079-4394", "lena@kraxi.com",
                "www.kraxi.com" },
            { "Dana Kraxi", "Auxiliary Paper Folder", "17, Aviation Road",
                "Paperfield", "7079-4305", "7079-4395", "dana@kraxi.com",
                "www.kraxi.com" },
            { "Anna Kraxi", "Accounting Assistant", "17, Aviation Road",
                "Paperfield", "7079-4306", "7079-4396", "anna@kraxi.com",
                "www.kraxi.com" } };

        int recordcount = persons.length; // number of personalization records

        try {
            p = new pdflib();

            p.set_option("searchpath={" + searchpath + "}");

            /* This means we must check return values of load_font() etc. */
            p.set_option("errorpolicy=return");

            if (p.begin_document(outfile, "") == -1)
                throw new Exception("Error: " + p.get_apiname() + ": "
                        + p.get_errmsg());

            p.set_info("Creator", "PDFlib Cookbook");
            p.set_info("Title", title);

            /* Open the first-level Block container with imposition Blocks */
            indoc1 = p.open_pdi_document(infilename1, "");
            if (indoc1 == -1)
                throw new Exception("Error: " + p.get_apiname() + ": "
                        + p.get_errmsg());

            /* Open the first page and prepare the page boxes for cloning */
            inpage1 = p.open_pdi_page(indoc1, 1, "cloneboxes");
            if (inpage1 == -1)
                throw new Exception("Error: " + p.get_apiname() + ": "
                        + p.get_errmsg());

            /* Query the number of Blocks to keep the code flexible */
            pagespersheet = (int) p.pcos_get_number(indoc1,
                    "length:pages[0]/blocks");

            /*
             * Open the second-level Block container with personalization Blocks
             */
            indoc2 = p.open_pdi_document(infilename2, "");
            if (indoc1 == -1)
                throw new Exception("Error: " + p.get_apiname() + ": "
                        + p.get_errmsg());

            /* Open the first page */
            inpage2 = p.open_pdi_page(indoc2, 1, "");
            if (inpage2 == -1)
                throw new Exception("Error: " + p.get_apiname() + ": "
                        + p.get_errmsg());

            for (record = 0; record < recordcount; record++) {
                /* Start a new output page if required */
                if (record % pagespersheet == 0) {
                    /* The page size will be adjusted with "cloneboxes" */
                    p.begin_page_ext(0, 0, "width=a4.width height=a4.height");

                    /*
                     * Place the first-level Block container page on the output
                     * page
                     */
                    p.fit_pdi_page(inpage1, 0, 0, "cloneboxes");
                }

                /*
                 * Imposition: fill first-level PDF Blocks with second-level
                 * container page
                 */
                if (p.fill_pdfblock(inpage1, "Block_" + record % pagespersheet,
                        inpage2, "fitmethod=meet") == -1) {
                    System.err.println("Warning: " + p.get_errmsg());
                    continue;
                }

                /* 
                 * Personalization: fill second-level Blocks with variable data
                 */
                for (block = 0; block < nblocks; block++) {

                    if (p.fill_textblock(inpage2, blocknames[block],
                            persons[record][block],
                            "encoding=unicode embedding") == -1) {
                        System.err.println("Warning: " + p.get_errmsg());
                    }
                }

                /*
                 * Finish the page if no more space, or no more records
                 * available
                 */
                if (record % pagespersheet == pagespersheet - 1
                        || record == recordcount - 1) {
                    p.end_page_ext("");
                }
            }

            p.close_pdi_page(inpage1);
            p.close_pdi_page(inpage2);

            p.end_document("");
            p.close_pdi_document(indoc1);
            p.close_pdi_document(indoc2);
        }
        catch (PDFlibException e) {
            System.err.println("PDFlib exception occurred:");
            System.err.println("[" + e.get_errnum() + "] " + e.get_apiname() +
                ": " + e.get_errmsg());
        exitcode = 1;
        }
        catch (Exception e) {
            System.err.println(e);
        exitcode = 1;
        }
        finally {
            if (p != null) {
                p.delete();
            }
        System.exit(exitcode);
        }
    }
}