#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "wweather.h"

#ifndef NULL
#define NULL (void *)0
#endif

int wcount = 0;

/** Create a print rep of the passed in weather struct
 * @param w a weather struct pointer.  
 * **/
void wprinter(WeatherData* w)
{
    char timee[55];
    timeToString(timee, w->time);
    char tempe[55];
    tempToString(tempe, w->temperature);
    printf("Time:%s  Temp:%s\n", timee, tempe);
}

/**
 * Parse a line of text into a weather struct
 * @param line -- the text to be parsed
 * @param w -- pointer to a weather struct, then internals will be changed
 * **/
WeatherData* parse(char* line)
{
    //printf("%s", line);
    WeatherData *ret = malloc(sizeof(WeatherData));
    char *c = strtok(line, " \t");
    char *c2 = strtok(NULL, " \t");
    ret->time = makeTime(c, c2);
    c = strtok(NULL, " \t");
    c2 = strtok(NULL, " \t");
    //printf("toTemp ||%s||%s||\n", c, c2);
    ret->temperature = makeTemperature(atoi(c), c2);
    c = strtok(NULL, " \t");
    c2 = strtok(NULL, " \t");
    ret->dewPoint = makeTemperature(atoi(c), c2);
    c = strtok(NULL, " \t");
    ret->relHum = atoi(c);
    c = strtok(NULL, " \t");
    c2 = strtok(NULL, " \t");
    char *c3 = strtok(NULL, "\t");
    ret->wind = makeWind(c, atoi(c2), c3);
    return ret;
}

/**
 * Read a file containing weather data and parse that file
 * into the weather array
 * @param the name of the file to be read
 * @return the number of lines of weather data that were read
 * **/
int readFile(char* fileName) {
    weather = malloc(200 * sizeof(WeatherData *));
    char line[256];
    FILE *f = fopen(fileName, "r");
    if (f==NULL) {
	    fprintf(stderr, "Could not open %s -- quitting\n", fileName);
	    return -1;
    }
    #ifndef MAIN_ARRAY
    WeatherData **cWeather = weather;
    #endif
    int c = 0;
    while (NULL != fgets(line, 256, f))
    {
        if (strlen(line)>0) {
            #ifdef MAIN_ARRAY
            weather[c] = parse(line);
            #else
            *cWeather = parse(line);
            cWeather++;
            #endif
            c++;
        }
    }
    printf("read %d weather objects\n", c);
    wcount = c;
    fclose(f);
    return c;
}

/**
 * Weather destructor
 * @param the weather struct to be destroyed
 * **/
void freeWeather(WeatherData * ww) {
    freeTime(ww->time);
    freeTemperature(ww->temperature);
    freeTemperature(ww->dewPoint);
    freeWind(ww->wind);
    free(ww);
}

/**
 * free the array and its contents
 * **/
void freeAllWeather() {
    for (int i = 0; i < wcount; i++) {
        freeWeather(weather[i]);
    }
    free(weather);
}