/*
 *
 * Copyright 2023 Oleg Borodin  <borodin@unix7.org>
 *
 */

#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <strings.h>

#include <cllexer.h>
#include <clcomp.h>

static char* strcopy(char* src) {
    size_t srcsize = strlen(src) + 1;
    char* dst = malloc(srcsize);
    memset(dst, '\0', srcsize);
    strcpy(dst, src);
    return dst;
}

void clcomp_init(clcomp_t* comp, vmapper_t* vmapper, char** argv, int argc) {
        comp->argv = argv;
        comp->argc = argc;
        comp->argn = 1;
        comp->pos = 0;
        comp->vmapper = vmapper;
        if (comp->argc > comp->argn) {
            cllexer_init(&(comp->lexer), comp->argv[comp->argn]);
        }
}

int clcomp_gettok(clcomp_t* comp, char* token) {

    if (comp->argn > comp->argc) {
        strcpy(token, "EOF");
        return TOKEN_ENDF;
    }

    int toktype = cllexer_gettok(&(comp->lexer), token);
    if (toktype == TOKEN_ENDF && comp->argn != comp->argc) {
        comp->argn++;
        cllexer_init(&(comp->lexer), comp->argv[comp->argn]);
        strcpy(token, "space");
        return TOKEN_SPACE;
    }
    return toktype;
}

int clcomp_parse(clcomp_t* comp) {

        char token[1024];
        int toktype = TOKEN_NULL;
        int i = 0;

        char* key = NULL;
        char* val = NULL;

        while (toktype != TOKEN_ENDF) {
            toktype = clcomp_gettok(comp, token);
            i++;
            printf("cllexer_parse res: %d: %d [%s]\n", i, toktype, token);
            switch (comp->pos) {
                case 0: {
                    if (toktype == TOKEN_PREF) {
                        comp->pos = 1;
                        printf("pos %d: TOKEN_PREF %s\n", comp->pos, token);
                        continue;
                    } else {
                        continue;
                    }
                }
                case 1: {
                    if (toktype == TOKEN_WORD) {
                        comp->pos = 2;
                        key = strcopy(token);
                        printf("pos %d: TOKEN_WORD %s\n", comp->pos, token);
                        continue;
                    } else {
                        goto error;
                    }
                }
                case 2: {
                    if (toktype == TOKEN_DELIM || toktype == TOKEN_SPACE) {
                        comp->pos = 3;
                        printf("pos %d: TOKEN_DELIM %s\n", comp->pos, token);
                        continue;
                    } else {
                        goto error;
                    }
                }
                case 3: {
                    if (toktype == TOKEN_WORD) {
                        comp->pos = 0;
                        printf("pos %d: TOKEN_WORD %s\n", comp->pos, token);
                        val = strcopy(token);
                        printf("keyval = [%s], [%s]\n", key, val);
                        vmapper_set(comp->vmapper, key, val);
                        free(key);
                        free(val);
                        continue;
                    } else {
                        goto error;
                    }
                }

            }
        }
        return 0;

    error:
        free(key);
        free(val);
        return -1;
}


void clcomp_destroy(clcomp_t* clcomp) {
    (void)clcomp;
}