/*
 * Example of adding an autofilter to a worksheet in Excel using
 * libxlsxwriter.
 *
 * Copyright 2014-2018, John McNamara, jmcnamara@cpan.org
 *
 */

#include "xlsxwriter.h"


int main() {

    lxw_workbook  *workbook  = workbook_new("autofilter.xlsx");
    lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
    uint16_t i;


    /* Simple data structure to represent the row data. */
    struct row {
        char region[16];
        char item[16];
        int  volume;
        char month[16];
    };

    struct row data[] = {
        {"East",  "Apple",   9000, "July"      },
        {"East",  "Apple",   5000, "July"      },
        {"South", "Orange",  9000, "September" },
        {"North", "Apple",   2000, "November"  },
        {"West",  "Apple",   9000, "November"  },
        {"South", "Pear",    7000, "October"   },
        {"North", "Pear",    9000, "August"    },
        {"West",  "Orange",  1000, "December"  },
        {"West",  "Grape",   1000, "November"  },
        {"South", "Pear",   10000, "April"     },
        {"West",  "Grape",   6000, "January"   },
        {"South", "Orange",  3000, "May"       },
        {"North", "Apple",   3000, "December"  },
        {"South", "Apple",   7000, "February"  },
        {"West",  "Grape",   1000, "December"  },
        {"East",  "Grape",   8000, "February"  },
        {"South", "Grape",  10000, "June"      },
        {"West",  "Pear",    7000, "December"  },
        {"South", "Apple",   2000, "October"   },
        {"East",  "Grape",   7000, "December"  },
        {"North", "Grape",   6000, "April"     },
        {"East",  "Pear",    8000, "February"  },
        {"North", "Apple",   7000, "August"    },
        {"North", "Orange",  7000, "July"      },
        {"North", "Apple",   6000, "June"      },
        {"South", "Grape",   8000, "September" },
        {"West",  "Apple",   3000, "October"   },
        {"South", "Orange", 10000, "November"  },
        {"West",  "Grape",   4000, "July"      },
        {"North", "Orange",  5000, "August"    },
        {"East",  "Orange",  1000, "November"  },
        {"East",  "Orange",  4000, "October"   },
        {"North", "Grape",   5000, "August"    },
        {"East",  "Apple",   1000, "December"  },
        {"South", "Apple",   10000, "March"    },
        {"East",  "Grape",   7000, "October"   },
        {"West",  "Grape",   1000, "September" },
        {"East",  "Grape",  10000, "October"   },
        {"South", "Orange",  8000, "March"     },
        {"North", "Apple",   4000, "July"      },
        {"South", "Orange",  5000, "July"      },
        {"West",  "Apple",   4000, "June"      },
        {"East",  "Apple",   5000, "April"     },
        {"North", "Pear",    3000, "August"    },
        {"East",  "Grape",   9000, "November"  },
        {"North", "Orange",  8000, "October"   },
        {"East",  "Apple",  10000, "June"      },
        {"South", "Pear",    1000, "December"  },
        {"North", "Grape",   10000, "July"     },
        {"East",  "Grape",   6000, "February"  }
    };


    /* Write the column headers. */
    worksheet_write_string(worksheet, 0, 0, "Region", NULL);
    worksheet_write_string(worksheet, 0, 1, "Item",   NULL);
    worksheet_write_string(worksheet, 0, 2, "Volume" , NULL);
    worksheet_write_string(worksheet, 0, 3, "Month",  NULL);


    /* Write the row data. */
    for (i = 0; i < sizeof(data)/sizeof(struct row); i++) {
        worksheet_write_string(worksheet, i + 1, 0, data[i].region, NULL);
        worksheet_write_string(worksheet, i + 1, 1, data[i].item,   NULL);
        worksheet_write_number(worksheet, i + 1, 2, data[i].volume , NULL);
        worksheet_write_string(worksheet, i + 1, 3, data[i].month,  NULL);
    }

    /* Add the autofilter. */
    worksheet_autofilter(worksheet, 0, 0, 50, 3);

    return workbook_close(workbook);
}
