#include "list_handling.h"
#include "parse_ics.h"
#include "string_handling.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>

void parse_event(char event_string[], struct event **head) {
	char *start_date = strstr(event_string, "\r\nDTSTART;");
	char *end_date = strstr(event_string, "\r\nDTEND;");
	char *sequence = strstr(event_string, "\r\nSEQUENCE:");
	char *summary = strstr(event_string, "\r\nSUMMARY:");
	char *location = strstr(event_string, "\r\nLOCATION:");
	char *transp = strstr(event_string, "\r\nTRANSP:");

	char *start_date_str = malloc(256);
	char *end_date_str = malloc(256);
	char *summary_str = malloc(512);

	memset(start_date_str, '\0', 256);
	memset(end_date_str, '\0', 256);
	memset(summary_str, '\0', 512);

	assert(start_date != NULL);
	assert(end_date != NULL);
	assert(sequence != NULL);
	assert(summary != NULL);
	assert(transp != NULL);

	strncpy(start_date_str, start_date, end_date - start_date);

	strncpy(end_date_str, end_date, sequence - end_date);

	if (location != NULL) {
		strncpy(summary_str,\
		summary + strlen("\r\nSUMMARY:"),\
		location - summary - strlen("\r\nSUMMARY:"));
	} else {
		strncpy(summary_str,\
		summary + strlen("\r\nSUMMARY:"),\
		transp - summary - strlen("\r\nSUMMARY:"));
	}

	// parse dates
	remove_whitespace(start_date_str);
	cut_string(start_date_str, ':', 1);

	remove_whitespace(end_date_str);
	cut_string(end_date_str, ':', 1);
	
	sorted_insert(head, start_date_str, end_date_str, summary_str);

	free(start_date_str);
	free(end_date_str);
	free(summary_str);
}