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

typedef struct Animal {
 	char *name;
	int age;
	void (*talk) (struct Animal*);
} Animal;

typedef struct Dog {
 	struct Animal base; // Dog "extends" Animal
	bool bites;
} Dog;

typedef struct Bird {
	struct Animal base; // Bird "extends" Animal
	void (*fly) (struct Bird*,int);
} Bird;

typedef struct Parrot {
	struct Bird base; // Parrot "extends" Bird
	enum {
		ROJO, VERDE, AMARILLO
	} color_plumas;
	char *frase;
} Parrot;

/// Animal "Interface" ///////////////////////////

void cat_meow(Animal *animal){
	printf("[Cat] Meow! my name is %s\n", animal->name);
}

void dog_bark(Animal *animal){
	Dog *d = (Dog*) animal;
	printf("[Dog] Woof! my name is %s and I %sbite\n", animal->name, d->bites ? "" : "don't ");
}

void parrot_talk(Animal *animal){
	Parrot *l = (Parrot*) animal;
	printf("[Parrot] %s says: \"%s\"\n", animal->name, l->frase);
}

void bird_talk(Animal *animal) {
	printf("[Bird] Tweep! my name is %s\n", animal->name);
}

/// Bird "Interface" /////////////////////////////

void bird_fly(struct Bird *bird, int n){
	printf("%s flies: ", bird->base.name);
	for (int i = 0; i < n; i++){
		printf(".");
	}
	printf("\n");
}

void parrot_fly(struct Bird *bird, int n){
	printf("%s flies: ", bird->base.name);
	for (int i = 0; i < n; i++){
		printf("*");
	}
	printf("\n");
}

//////////////////////////////////////////////////

void say_hi(Animal **animals){
	printf("*The animals say hi*\n");
	while (*animals){
		(*animals)->talk(*animals);
		animals++;
	}
}

void fly_birds(Bird **birds, int *args){
	printf("*The birds fly*\n");
	while (*birds){
		(*birds)->fly(*birds, *args++);
		birds++;
	}
}

int main(){
	Animal cat = {.name = "Felix", .talk = cat_meow};

     	Dog dog = {
		.base = (Animal){
			.name = "Fido",
			.talk = dog_bark
		},
		.bites = false
	};

	Parrot parrot = {
		.base = (Bird){
			.base = (Animal){
				.name = "Perry",
				.talk = parrot_talk
			},
			.fly = parrot_fly
		},
		.frase =  "I'm so colorful!"
	};

	Bird bird = {
		.base = (Animal){
			.name = "Pigelton",
			.talk = bird_talk
		},
		.fly = bird_fly
	};


	Animal *arr[120] = {&cat, (Animal*)&dog, (Animal*)&parrot, (Animal*)&bird, NULL};
	say_hi(arr);

	printf("\n");

	Bird *bird_arr[120] = {&bird, (Bird*)&parrot, NULL};
	int args[] = {12, 20};
	fly_birds(bird_arr, args);

	return 0;
}