HTMLify

#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "image.h"
#include "filter.h"
#include "gui.h"

char
    *image_path_1 = NULL,
    *image_path_2 = NULL,
    *output_path = NULL
;

Image *image1, *image2;

void help(const char *);

int main(int argc, char *argv[]) {
    // arg parsing
    char
        *filter_name = strdup(""),
        *last_arg = strdup(""),
        *curr_arg = strdup("")
    ;
    bool show_gui = false;
    int i = 1;
    if (argc == 1) {
        return 0;
    }
    for (;i<argc; i++) {
        free(curr_arg);
        curr_arg = strdup(argv[i]);

        // printf("current argumante: %s\n", curr_arg);

        if (strcmp(last_arg, "-i") == 0) {
            goto image_asign;
        }
        if (strcmp(last_arg, "-f") == 0) {
            filter_name = strdup(curr_arg);
            goto end;
        }
        if (strcmp(last_arg, "-o") == 0) {
            output_path = strdup(curr_arg);
            goto end;
        }

        if (strcmp(curr_arg, "-i") == 0)
            goto end;
        if (strcmp(curr_arg, "-f") == 0)
            goto end;
        if (strcmp(curr_arg, "-o") == 0)
            goto end;
        if (strcmp(curr_arg, "-h") == 0) {
            help(argv[0]);
            goto end;
        }
        if (strcmp(curr_arg, "-ui") == 0) {
            show_gui = true;
            goto end;
        }
        if (strcmp(curr_arg, "-gui") == 0) {
            show_gui = true;
            goto end;
        }

        image_asign:
        if (image_path_1 == NULL) {
            image_path_1 = strdup(curr_arg);
            goto end;
        }
        if (image_path_2 == NULL) {
            image_path_2 = strdup(curr_arg);
            goto end;
        }

        end:
        free(last_arg);
        last_arg = strdup(curr_arg);
    }

    if (image_path_1 == NULL) {
        printf("Image path is not providded... exiting...");
        exit(0);
    }
    if (output_path == NULL) {
        output_path = (char*)malloc(8+strlen(image_path_1));
        output_path[0] = '\0';
        strcpy(output_path, "output-");
        strcat(output_path, image_path_1);
    }
    if (strcmp(&output_path[strlen(output_path)-3], "png") != 0) {
    int len = strlen(output_path);
    char *t = malloc(len + 5); 
    strcpy(t, output_path);
    strcat(t, ".png");
    free(output_path);
    output_path = t;
    }

    // filter prosennig

    image1 = load_image(image_path_1);
    image2 = image_path_2 == NULL ? NULL : load_image(image_path_2);
    Filter *filter = filter_by_name(filter_name);

    if (show_gui) {
        return gui();
    }
    
    if (!filter) {
        printf("Filter not selected, use -f flag to select filter... exiting...");
        exit(0);
    }
    if (filter->argc > 1 && !image2) {
        printf("%s filter require %d args... exiting...", filter->name, filter->argc);
        exit(1);
    }

    

    Image *filtered;

    switch (filter->argc) {
        case 1:
            filtered = filter->arg_1(image1);
            break;
        case 2:
            filtered = filter->arg_2(image1, image2);
            break;
    }

    bool saved = save_image(filtered, output_path);
    if (!saved)
        printf("Filtered image didn't saved");
    else
        printf("Filtered image (%d pixels) saved!!", filtered->width*filtered->height);

}

void help(const char* exe) {
    for (int i=0;i<80;i++)printf("-");
    printf("\n");
    printf("Image Filter Utility\n");
    printf("Usage: \n");
    printf("\n");
    printf("%s [OPTS] [ARGS] ", exe);
    printf("\n\n");
    printf("OPTS:\n");
    printf("\t-i :\tInput Image\n");
    printf("\t-f :\tFilter name\n");
    printf("\t-o :\tOutput file\n");
    printf("\t-h :\tPrit this\n");
    printf("\n");
    printf("Filters:\n");
    for (int i=0; i<filter_count; i++) {
        printf("\t%s\n", filters[i].name);
    }
    for (int i=0;i<80;i++)printf("-");
    printf("\n\n");
}