#include "../parser.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>

void linedata_basic (char indent) {
  char *line = NULL;
  size_t bufsize = 32;
  ssize_t c_read = 0;

  terrace_linedata_t line_data = terrace_create_linedata(indent);

  while(c_read = getline(&line, &bufsize, stdin)) {
    if (c_read == -1) break;
    char *terrace_line = strtok(line, "\n");
    terrace_parse_line(terrace_line, &line_data);
    if (terrace_line == 0) terrace_line = "";

    printf("| level %u | indent %c | offsetHead %u | offsetTail %u | line %s |\n", line_data.level, line_data.indent, line_data.offsetHead, line_data.offsetTail, terrace_line);
  };

  free(line);
}

void linedata_head_tail (char indent) {
  char *line = NULL;
  size_t bufsize = 32;
  ssize_t c_read = 0;

  terrace_linedata_t line_data = terrace_create_linedata(indent);

  char *head;
  char *tail;

  while(c_read = getline(&line, &bufsize, stdin)) {
    if (c_read == -1) break;
    char *terrace_line = strtok(line, "\n");
    terrace_parse_line(terrace_line, &line_data);
    if (terrace_line == 0) terrace_line = "";

    if (line_data.offsetTail < c_read) tail = &terrace_line[line_data.offsetTail + 1];
    else tail = "";

    // Cheeky move to avoid string slicing.
    if (line_data.offsetHead < c_read) {
      terrace_line[line_data.offsetTail] = '\0';
      head = &terrace_line[line_data.offsetHead];
    }
    else head = "";

    printf("| head %s | tail %s |\n", head, tail);
  };

  free(line);
}

int main(int argc, char *argv[]) {
  if (argc < 2) return 0;

  char* test = argv[1];
  if (!strcmp(test, "linedata:basic")) linedata_basic(' ');
  if (!strcmp(test, "linedata:tabs")) linedata_basic('\t');
  if (!strcmp(test, "linedata:head-tail")) linedata_head_tail(' ');
  return 0;
}