#define _CRT_SECURE_NO_DEPRECATE
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h> /* needed for va_list */
#include <ctype.h>
#include <math.h>

#include "./helpers.c"
#include "./ast.c"
#include "./error.c"
#include "./io.c"
#include "./assert.c"
#include "./parse.c"
#include "./env.c"
#include "./built_ins.c"
#include "./eval.c"
#include "./testing.c"
#include "./init.c"

int interprete_file (char* file_content) {
    Ast_Node_Array_List* program = parse_program(file_content);
    if (error) {
        log_error();
        return 1;
    }
    Environment* env = create_empty_environment(Environment_Type_Let);

    built_in_load("pre.slime", env);
    if (error) {
        log_error();
        return 1;
    }

    Ast_Node* result = create_ast_node_nil();
    for (int i = 0; i < program->next_index; ++i) {
        result = eval_expr(program->data[i], env);
        if (error) {
            log_error();
            return 1;
        }
    }

    return 0;
}

int interprete_stdin () {
    printf("Welcome to the lispy interpreter.\n");
    char* line;
    Environment* env = create_empty_environment(Environment_Type_Let);

    built_in_load("pre.slime", env);
    if (error) {
        log_error();
        delete_error();
    }

    Ast_Node* parsed, * evaluated;
    while (true) {
        printf(">");
        line = read_line();
        parsed = parse_single_expression(line);
        if (error) {
            log_error();
            delete_error();
            continue;
        }
        evaluated = eval_expr(parsed, env);
        if (error) {
            log_error();
            delete_error();
            continue;
        }
        print(evaluated);
        printf("\n");
    }
    return 0;
}

int main (int argc, char *argv[]) {
    init();

    if (argc > 1) {
        char* file_content = read_entire_file(argv[1]);
        if (file_content) {
            return interprete_file(file_content);
        } else {
            printf("The file could not be read\n");
            return 1;
        }
    } else {
        run_all_tests();
        return interprete_stdin();
    }
}