#include <stdio.h>
#include <stdlib.h>
#include "groundext.h"

GroundValue native_file_read(GroundScope* scope, List args) {
    if (args.size < 1 || args.values[0].type != STRING) {
        return groundCreateValue(NONE);
    }
    
    char* path = args.values[0].data.stringVal;
    FILE* f = fopen(path, "r");
    if (!f) {
        return groundCreateValue(NONE);
    }
    
    fseek(f, 0, SEEK_END);
    long fsize = ftell(f);
    fseek(f, 0, SEEK_SET);
    
    char* content = malloc(fsize + 1);
    if (!content) {
        fclose(f);
        return groundCreateValue(NONE);
    }
    
    fread(content, 1, fsize, f);
    fclose(f);
    content[fsize] = 0;
    
    GroundValue val = groundCreateValue(STRING, content);
    free(content); 
    return val;
}

GroundValue native_file_write(GroundScope* scope, List args) {
    if (args.size < 2 || args.values[0].type != STRING || args.values[1].type != STRING) {
        return groundCreateValue(BOOL, 0);
    }
    
    char* path = args.values[0].data.stringVal;
    char* content = args.values[1].data.stringVal;
    
    FILE* f = fopen(path, "w");
    if (!f) {
        return groundCreateValue(BOOL, 0);
    }
    
    fprintf(f, "%s", content);
    fclose(f);
    
    return groundCreateValue(BOOL, 1);
}

void ground_init(GroundScope* scope) {
    groundAddNativeFunction(scope, "file_Read", native_file_read, STRING, 1, STRING, "path");
    groundAddNativeFunction(scope, "file_Write", native_file_write, BOOL, 2, STRING, "path", STRING, "content");
}