// Written by retoor@molodetz.nl

// This header file defines a structure `remo_t` used to store emoji representations and their descriptions. It includes functions to
// convert strings to lowercase, search for substrings case insensitively, print all emojis with their descriptions, and retrieve an emoji
// by its description.

// No third-party imports or includes are used outside the language's standard library.

// MIT License

#ifndef REMO_H
#define REMO_H
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdbool.h>

typedef struct {
    const char *str;
    const char *description;
} remo_t;

remo_t remo[] = {{"\U0001F600", "Grinning Face"},
                 {"\U0001F601", "Beaming Face with Smiling Eyes"},
                 {"\U0001F602", "Face with Tears of Joy"},
                 {"\U0001F923", "Rolling on the Floor Laughing"},
                 {"\U0001F603", "Grinning Face with Big Eyes"},
                 {"\U0001F604", "Grinning Face with Smiling Eyes"},
                 {"\U0001F609", "Winking Face"},
                 {"\U0001F60A", "Smiling Face with Smiling Eyes"},
                 {"\U0001F60D", "Smiling Face with Heart-Eyes"},
                 {"\U0001F618", "Face Blowing a Kiss"},
                 {"\U0001F617", "Kissing Face"},
                 {"\U0001F61A", "Kissing Face with Closed Eyes"},
                 {"\U0001F642", "Slightly Smiling Face"},
                 {"\U0001F643", "Upside-Down Face"},
                 {"\U0001F970", "Smiling Face with Hearts"},
                 {"\U0001F60B", "Face Savoring Food"},
                 {"\U0001F61B", "Face with Tongue"},
                 {"\U0001F61C", "Winking Face with Tongue"},
                 {"\U0001F92A", "Zany Face"},
                 {"\U0001F929", "Star-Struck"},
                 {"\U0001F631", "Face Screaming in Fear"},
                 {"\U0001F62D", "Loudly Crying Face"},
                 {"\U0001F624", "Face with Steam From Nose"},
                 {"\U0001F620", "Angry Face"},
                 {"\U0001F621", "Pouting Face"},
                 {"\U0001F47B", "Ghost"},
                 {"\U0001F480", "Skull"},
                 {"\U0001F4A9", "Pile of Poo"},
                 {"\U0001F47D", "Alien"},
                 {"\U000025A0", "Black Square"},
                 {"\U000025B2", "Upward Triangle"},
                 {"\U000025CF", "Black Circle"},
                 {"\U000025CB", "White Circle"},
                 {"\U00002B1B", "Large Black Square"},
                 {"\U00002B1C", "Large White Square"},
                 {"\U00002200", "For All"},
                 {"\U00002203", "Exists"},
                 {"\U00002205", "Empty Set"},
                 {"\U00002207", "Nabla"},
                 {"\U0000220F", "N-Ary Product"},
                 {"\U00002212", "Minus Sign"},
                 {"\U0000221E", "Infinity"},
                 {"\U00002190", "Left Arrow"},
                 {"\U00002191", "Up Arrow"},
                 {"\U00002192", "Right Arrow"},
                 {"\U00002193", "Down Arrow"},
                 {"\U00002195", "Up Down Arrow"},
                 {"\U00002197", "Up Right Arrow"},
                 {"\U00002198", "Down Right Arrow"},
                 {"\U000027A1", "Black Right Arrow"},
                 {"\U00002714", "Check Mark"},
                 {"\U00002716", "Heavy Multiplication X"},
                 {"\U00002728", "Sparkles"},
                 {"\U00002757", "Exclamation Mark"},
                 {"\U0000274C", "Cross Mark"},
                 {"\U00002795", "Heavy Plus Sign"},
                 {"\U00002600", "Sun"},
                 {"\U00002614", "Umbrella with Rain Drops"},
                 {"\U00002620", "Skull and Crossbones"},
                 {"\U000026A0", "Warning Sign"},
                 {"\U000026BD", "Soccer Ball"},
                 {"\U000026C4", "Snowman"},
                 {"\U00002733", "Eight Pointed Black Star"},
                 {"\U00002734", "Eight Spoked Asterisk"},
                 {"\U00002B50", "White Star"},
                 {"\U0001F31F", "Glowing Star"},
                 {"\U00002728", "Sparkles"},
                 {"\U0001F98A", "Fox"},
                 {"\U0001F415", "Dog"},
                 {"\U0001F431", "Cat Face"},
                 {"\U0001F435", "Monkey Face"},
                 {"\U0001F408", "Black Cat"},
                 {"\U0001F98C", "Deer"},
                 {"\U0001F344", "Mushroom"},
                 {"\U0001F333", "Tree"},
                 {"\U0001F308", "Rainbow"},
                 {"\U0001F320", "Shooting Star"},
                 {"\U00002600", "Sun"},
                 {"\U00002601", "Cloud"},
                 {"\U000026A1", "High Voltage"},
                 {"\U0001F525", "Fire"},
                 {"\U000026C4", "Snowman"},
                 {"\U0001F30A", "Water Wave"},
                 {"\U0001F68C", "Bus"},
                 {"\U0001F697", "Car"},
                 {"\U0001F6B2", "Bicycle"},
                 {"\U0001F6A2", "Ship"},
                 {"\U0001F681", "Helicopter"},
                 {"\U0001F680", "Rocket"},
                 {"\U0001F6EB", "Airplane"},
                 {"\U00000024", "Dollar Sign"},
                 {"\U000000A3", "Pound Sign"},
                 {"\U000000A5", "Yen Sign"},
                 {"\U000020AC", "Euro Sign"},
                 {"\U0001F4B5", "Dollar Banknote"},
                 {"\U0001F4B4", "Yen Banknote"},
                 {"\U00002660", "Black Spade Suit"},
                 {"\U00002663", "Black Club Suit"},
                 {"\U00002665", "Black Heart Suit"},
                 {"\U00002666", "Black Diamond Suit"},
                 {"\U0001F0CF", "Joker Card"},
                 {"\U0001F4DA", "Books"},
                 {"\U0001F4D7", "Green Book"},
                 {"\U0001F4C8", "Chart with Upwards Trend"},
                 {"\U0001F4C9", "Chart with Downwards Trend"},
                 {"\U0001F4B0", "Money Bag"},
                 {"\U0001F4B8", "Money with Wings"},
                 {"\U0001F4E6", "Package"},
                 {"\U00002757", "Exclamation Mark"},
                 {"\U00002714", "Check Mark"},
                 {"\U0000274C", "Cross Mark"},
                 {"\U00002705", "Check Mark Button"},
                 {"\U00002B50", "White Star"},
                 {"\U0001F31F", "Glowing Star"},
                 {"\U0001F4A1", "Light Bulb"},
                 {"\U0001F4A3", "Bomb"},
                 {"\U0001F4A9", "Pile of Poo"},
                 {"\U0001F3B5", "Musical Note"},
                 {"\U0001F3B6", "Multiple Musical Notes"},
                 {"\U0001F3BC", "Musical Score"},
                 {"\U0001F399", "Studio Microphone"},
                 {"\U0001F3A4", "Microphone"},
                 {"\U0001F35F", "Cheese Wedge"},
                 {"\U0001F355", "Slice of Pizza"},
                 {"\U0001F32D", "Taco"},
                 {"\U0001F37D", "Beer Mug"},
                 {"\U0001F96B", "Cup with Straw"},
                 {"\U0001F32E", "Hot Pepper"},
                 {"\U0001F95A", "Potato"},
                 {"\U00002600", "Aries"},
                 {"\U00002601", "Taurus"},
                 {"\U00002602", "Gemini"},
                 {"\U00002603", "Cancer"},
                 {"\U00002604", "Leo"},
                 {"\U00002605", "Virgo"},
                 {"\U00002606", "Libra"},
                 {"\U00002607", "Scorpio"},
                 {"\U00002608", "Sagittarius"},
                 {"\U00002609", "Capricorn"},
                 {"\U0000260A", "Aquarius"},
                 {"\U0000260B", "Pisces"},
                 {"\U0001F4C8", "Chart Increasing"},
                 {"\U0001F4C9", "Chart Decreasing"},
                 {"\U0001F4CA", "Bar Chart"},
                 {"\U0001F7E6", "Orange Circle"},
                 {"\U0001F7E7", "Yellow Circle"},
                 {"\U0001F7E8", "Green Circle"},
                 {"\U0001F7E9", "Blue Circle"},
                 {"\U0001F7EA", "Purple Circle"},
                 {"\U0001F1E6\U0001F1E9", "Flag of France"},
                 {"\U0001F1E8\U0001F1E6", "Flag of Germany"},
                 {"\U0001F1FA\U0001F1F8", "Flag of United States"},
                 {"\U0001F1E7\U0001F1F7", "Flag of Canada"},
                 {"\U0001F1EE\U0001F1F2", "Flag of Italy"},
                 {"\U0001F1F8\U0001F1EC", "Flag of Australia"},
                 {"\U0001F1F3\U0001F1F4", "Flag of Spain"},
                 {"\U0001F4A5", "Collision"},
                 {"\U0001F4A6", "Sweat Droplets"},
                 {"\U0001F4A8", "Dashing Away"},
                 {"\U0001F50B", "Battery"},
                 {"\U0001F4BB", "Laptop Computer"},
                 {"\U0001F4DE", "Telephone"},
                 {"\U0001F4E7", "Incoming Envelope"}};
size_t remo_count = sizeof(remo) / sizeof(remo[0]);

void rstrtolower(const char *input, char *output) {
    while (*input) {
        *output = tolower(*input);
        input++;
        output++;
    }
    *output = 0;
}

bool rstrinstr(const char *haystack, const char *needle) {
    char lower1[strlen(haystack) + 1];
    char lower2[strlen(needle) + 1];
    rstrtolower(haystack, lower1);
    rstrtolower(needle, lower2);
    return strstr(lower1, lower2) != NULL;
}

void remo_print() {
    for (size_t i = 0; i < remo_count; i++) {
        printf("%s - %s\n", remo[i].str, remo[i].description);
    }
}

const char *remo_get(char *name) {
    for (size_t i = 0; i < remo_count; i++) {
        if (rstrinstr(remo[i].description, name)) {
            return remo[i].str;
        }
    }
    return NULL;
}

#endif