/*
 ************************************************************
 * MODULE: r.le.pixel/input.c                               *
 *         Version 5.0                Nov. 1, 2001          *
 *                                                         *
 * AUTHOR: W.L. Baker, University of Wyoming                *
 *         BAKERWL@UWYO.EDU                                 *
 *                                                          *
 * PURPOSE: To analyze pixel-scale landscape properties     *
 *         input.c uses the GRASS parser to get user input  *
 *                                                         *
 * COPYRIGHT: (C) 2001 by W.L. Baker                        *
 *                                                          *
 * This program is free software under the GNU General      *
 * Public License(>=v2).  Read the file COPYING that comes  *
 * with GRASS for details                                   *
 *                                                         *
 ************************************************************/

#include <stdlib.h>
#include <grass/config.h>
#include "pixel.h"


extern struct CHOICE *choice;

void user_input(int argc, char **argv)
{
    int i;

    /* setup the GRASS parsing routine
       structures to be used to read 
       in the user's parameter choices */
    struct Flag *units;
    struct Flag *zscore;
    struct Flag *edgemap;
    struct Option *name;
    struct Option *sampling_method;
    struct Option *region;
    struct Option *att;
    struct Option *diversity;
    struct Option *measure_code;
    struct Option *method_code;
    struct Option *juxtaposition;
    struct Option *edge;


    /* use the GRASS parsing routines to read in the user's parameter choices */

    edgemap = G_define_flag();
    edgemap->key = 'e';
    edgemap->description =
	"Output map 'edge' of edges given a '1' in r.le.para/edge file";

    units = G_define_flag();
    units->key = 'u';
    units->description =
	"Output maps 'units_x' with sampling units for each scale x ";

    zscore = G_define_flag();
    zscore->key = 'z';
    zscore->description = "Output map 'zscores' with standardized scores";

    name = G_define_option();
    name->key = "map";
    name->description = "Raster map to be analyzed";
    name->type = TYPE_STRING;
    name->gisprompt = "old,cell,raster";
    name->required = YES;

    sampling_method = G_define_option();
    sampling_method->answer = "w";
    sampling_method->key = "sam";
    sampling_method->description = "Sampling method (choose only 1 method):\n"
	"\tw = whole map      u = units        m = moving window   r = regions";
    sampling_method->type = TYPE_STRING;
    sampling_method->multiple = NO;
    sampling_method->required = NO;

    region = G_define_option();
    region->key = "reg";
    region->description =
	"Name of regions map, only when sam = r; omit otherwise";
    region->type = TYPE_STRING;
    region->gisprompt = "old,cell,raster";
    region->required = NO;

    att = G_define_option();
    att->key = "att";
    att->description =
	"b1 = mn. pixel att.                 b2 = s.d. pixel att.\n"
	"\tb3 = min. pixel att.                b4 = max. pixel att.";
    att->options = "b1,b2,b3,b4";
    att->type = TYPE_STRING;
    att->multiple = YES;
    att->required = NO;

    diversity = G_define_option();
    diversity->key = "div";
    diversity->description =
	"d1 = richness      d2 = Shannon     d3 = dominance     d4 = inv. Simpson";
    diversity->options = "d1,d2,d3,d4";
    diversity->type = TYPE_STRING;
    diversity->multiple = YES;
    diversity->required = NO;

    method_code = G_define_option();
    method_code->key = "te1";
    method_code->description = "Texture method (choose only 1 method):\n"
	"\tm1 = 2N-H          m2 = 2N-45       m3 = 2N-V          m4 = 2N-135\n"
	"\tm5 = 4N-HV         m6 = 4N-DIAG     m7 = 8N";
    method_code->options = "m1,m2,m3,m4,m5,m6,m7";
    method_code->type = TYPE_STRING;
    method_code->multiple = NO;
    method_code->required = NO;

    measure_code = G_define_option();
    measure_code->key = "te2";
    measure_code->description =
	"Texture measures (required if te1 was specified):\n"
	"\tt1 = contagion           t2 = ang. sec. mom.     t3 = inv. diff. mom.\n"
	"\tt4 = entropy             t5 = contrast";
    measure_code->options = "t1,t2,t3,t4,t5";
    measure_code->type = TYPE_STRING;
    measure_code->multiple = YES;
    measure_code->required = NO;

    juxtaposition = G_define_option();
    juxtaposition->key = "jux";
    juxtaposition->description =
	"Juxtaposition measures (weight file in r.le.para needed):\n"
	"\tj1 = mn. juxtaposition              j2 = s.d. juxtaposition";
    juxtaposition->options = "j1,j2";
    juxtaposition->type = TYPE_STRING;
    juxtaposition->multiple = YES;
    juxtaposition->required = NO;

    edge = G_define_option();
    edge->key = "edg";
    edge->description =
	"e1 = sum of edges  e2 = sum of edges by type (need edge file: r.le.para)";
    edge->options = "e1,e2";
    edge->type = TYPE_STRING;
    edge->multiple = YES;
    edge->required = NO;


    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    /* record the user inputs for map,
       sam, run, and out parameters */

    strcpy(choice->fn, name->answer);

    choice->wrum = sampling_method->answer[0];


    /* check for unacceptable values for
       input parameters */

    if (strcmp(sampling_method->answer, "w") &&
	strcmp(sampling_method->answer, "u") &&
	strcmp(sampling_method->answer, "m") &&
	strcmp(sampling_method->answer, "r")) {
	fprintf(stdout, "\n");
	fprintf(stdout,
		"   ***************************************************\n");
	fprintf(stdout,
		"    You input an unacceptable value for parameter sam \n");
	fprintf(stdout,
		"   ***************************************************\n");
	exit(EXIT_FAILURE);
    }

    /* check for multiple values for te1 */

    if (method_code->answer)
	if (method_code->answers[1]) {
	    fprintf(stdout, "\n");
	    fprintf(stdout,
		    "   **********************************************\n");
	    fprintf(stdout,
		    "    You input multiple values for parameter te1, \n");
	    fprintf(stdout,
		    "    but only one is allowed                      \n");
	    fprintf(stdout,
		    "   **********************************************\n");
	    exit(EXIT_FAILURE);
	}


    /* if the -u flag is specified, then
       set the choice->units flag to 1 */

    choice->units = 0;
    if (!strcmp(sampling_method->answer, "u") && units->answer)
	choice->units = 1;
    else if (strcmp(sampling_method->answer, "u") && units->answer) {
	fprintf(stdout, "\n");
	fprintf(stdout,
		"   ***************************************************\n");
	fprintf(stdout,
		"    You requested output of map 'units' with sampling \n");
	fprintf(stdout,
		"    units, by using flag -u, but this option is only  \n");
	fprintf(stdout,
		"    available when sam=u                              \n");
	fprintf(stdout,
		"   ***************************************************\n");
	exit(EXIT_FAILURE);
    }

    /* if sampling_method is by REGION
       get region file name.  Check to see
       that the name was input */

    if (!strcmp(sampling_method->answer, "r")) {
	if (region->answer)
	    strcpy(choice->reg, region->answer);
	else {
	    fprintf(stdout, "\n");
	    fprintf(stdout,
		    "   ***********************************************\n");
	    fprintf(stdout,
		    "    You requested sampling by region, but did not \n");
	    fprintf(stdout,
		    "    input the name of the region using the reg=   \n");
	    fprintf(stdout,
		    "    parameter                                     \n");
	    fprintf(stdout,
		    "   ***********************************************\n");
	    exit(EXIT_FAILURE);
	}
    }

    if (region->answer)
	if (strcmp(sampling_method->answer, "r")) {
	    fprintf(stdout, "\n");
	    fprintf(stdout,
		    "   ***********************************************\n");
	    fprintf(stdout,
		    "    You requested sampling by region, by using    \n");
	    fprintf(stdout,
		    "    the reg= parameter, but did not input the     \n");
	    fprintf(stdout,
		    "    sam=r parameter                               \n");
	    fprintf(stdout,
		    "   ***********************************************\n");
	    exit(EXIT_FAILURE);
	}

    /* initialize flag arrays in choice
       data structure. */

    for (i = 0; i < 5; i++)
	choice->att[i] = 0;
    for (i = 0; i < 5; i++)
	choice->div[i] = 0;
    for (i = 0; i < 6; i++)
	choice->te2[i] = 0;
    for (i = 0; i < 3; i++)
	choice->jux[i] = 0;
    for (i = 0; i < 3; i++)
	choice->edg[i] = 0;

    /* fill measure_code and method
       code arrays */


    if (att->answer) {
	choice->att[0] = 1;
	for (i = 0; att->answers[i] != NULL; i++) {
	    if (!strcmp(att->answers[i], "b1"))
		choice->att[1] = 1;
	    else if (!strcmp(att->answers[i], "b2"))
		choice->att[2] = 1;
	    else if (!strcmp(att->answers[i], "b3"))
		choice->att[3] = 1;
	    else if (!strcmp(att->answers[i], "b4"))
		choice->att[4] = 1;
	}
    }

    if (edgemap->answer && choice->wrum == 'w') {
	choice->edgemap = edgemap->answer;
	choice->edg[0] = 1;
	choice->edg[2] = 1;
    }
    else if (edgemap->answer && choice->wrum != 'w') {
	fprintf(stdout, "\n");
	fprintf(stdout,
		"   ****************************************************\n");
	fprintf(stdout,
		"    An edge map (flag is -e) is not available unless   \n");
	fprintf(stdout,
		"    sam=w                                              \n");
	fprintf(stdout,
		"   ****************************************************\n");
	exit(EXIT_FAILURE);
    }

    if (zscore->answer && choice->wrum == 'w') {
	choice->z = zscore->answer;
	choice->att[0] = 1;
	choice->att[1] = 1;
	choice->att[2] = 1;
    }
    else if (zscore->answer && choice->wrum != 'w') {
	fprintf(stdout, "\n");
	fprintf(stdout,
		"   ****************************************************\n");
	fprintf(stdout,
		"    A zscores map (flag is -z) is not available unless \n");
	fprintf(stdout,
		"    sam=w                                              \n");
	fprintf(stdout,
		"   ****************************************************\n");
	exit(EXIT_FAILURE);
    }

    if (diversity->answer) {
	choice->div[0] = 1;
	for (i = 0; diversity->answers[i] != NULL; i++) {
	    if (!strcmp(diversity->answers[i], "d1"))
		choice->div[1] = 1;
	    else if (!strcmp(diversity->answers[i], "d2"))
		choice->div[2] = 1;
	    else if (!strcmp(diversity->answers[i], "d3"))
		choice->div[3] = 1;
	    else if (!strcmp(diversity->answers[i], "d4"))
		choice->div[4] = 1;
	}
    }

    choice->tex = 0;
    if (measure_code->answer || method_code->answer) {
	if (measure_code->answer && method_code->answer) {
	    choice->te2[0] = 1;
	    for (i = 0; measure_code->answers[i] != NULL; i++) {
		if (!strcmp(measure_code->answers[i], "t1"))
		    choice->te2[1] = 1;
		else if (!strcmp(measure_code->answers[i], "t2"))
		    choice->te2[2] = 1;
		else if (!strcmp(measure_code->answers[i], "t3"))
		    choice->te2[3] = 1;
		else if (!strcmp(measure_code->answers[i], "t4"))
		    choice->te2[4] = 1;
		else if (!strcmp(measure_code->answers[i], "t5"))
		    choice->te2[5] = 1;
	    }
	    if (!strcmp(method_code->answer, "m1"))
		choice->tex = 1;
	    else if (!strcmp(method_code->answer, "m2"))
		choice->tex = 2;
	    else if (!strcmp(method_code->answer, "m3"))
		choice->tex = 3;
	    else if (!strcmp(method_code->answer, "m4"))
		choice->tex = 4;
	    else if (!strcmp(method_code->answer, "m5"))
		choice->tex = 5;
	    else if (!strcmp(method_code->answer, "m6"))
		choice->tex = 6;
	    else if (!strcmp(method_code->answer, "m7"))
		choice->tex = 7;
	}
	else {
	    fprintf(stdout, "\n");
	    fprintf(stdout,
		    "   ************************************************\n");
	    fprintf(stdout,
		    "    You requested texture measurement, but did not \n");
	    fprintf(stdout,
		    "    input both parameter te1 and te2               \n");
	    fprintf(stdout,
		    "   ************************************************\n");
	    exit(EXIT_FAILURE);
	}
    }

    if (juxtaposition->answer) {
	choice->jux[0] = 1;
	for (i = 0; juxtaposition->answers[i] != NULL; i++) {
	    if (!strcmp(juxtaposition->answers[i], "j1"))
		choice->jux[1] = 1;
	    else if (!strcmp(juxtaposition->answers[i], "j2"))
		choice->jux[2] = 1;
	}
    }

    if (edge->answer) {
	choice->edg[0] = 1;
	for (i = 0; edge->answers[i] != NULL; i++) {
	    if (!strcmp(edge->answers[i], "e1"))
		choice->edg[1] = 1;
	    else if (!strcmp(edge->answers[i], "e2"))
		choice->edg[2] = 1;
	}
    }

    if (!att->answer && !diversity->answer && !measure_code->answer &&
	!juxtaposition->answer && !edge->answer && !zscore->answer &&
	!edgemap->answer) {
	fprintf(stdout, "\n");
	fprintf(stdout,
		"   **************************************************\n");
	fprintf(stdout,
		"    You did not select any measures to be calculated \n");
	fprintf(stdout,
		"   **************************************************\n");
	exit(EXIT_FAILURE);
    }

    return;
}