#ifndef COMET_BLOCK_H
#define COMET_BLOCK_H

#include <stddef.h>
#include <stdbool.h>
#include <time.h>

#include "event.h"
#include "util.h"
#include "config.h"

// Element or text alignment
//
typedef enum {
    ALIGN_LEFT,
    ALIGN_CENTER,
    ALIGN_RIGHT,
} align_t;

// Block type identifier
//
typedef enum {
    BLOCK_TEXT,
    BLOCK_GROUP,
} block_type_t;

typedef struct block block_t;

// Triggered when an event is directed towards the block
//
typedef void (*block_event_t)(block_t *block, event_t event);

// Regularly called depending on the inverval passed from the last update
//
typedef void (*block_update_t)(block_t *block);

// Block finalization routine
// NOTE: The block state must be freed by this function
//
typedef void (*block_finalize_t)(block_t *block);

// Block struct
//
struct block {
    block_type_t type;
    char *label;
    bool active;
    bool hidden;
    void *state;
    struct timespec update_interval;
    struct timespec update_last;
    block_update_t update_cb;
    block_event_t event_cb;
    block_finalize_t finalize_cb;
    color_t color;
    color_t line_color;
    int line_width;
    int x_padding, y_padding;
    int min_width, max_width;
    union {
        struct {
            char *text;
            color_t text_color;
            align_t text_align;
            int text_size;
        } text;
        struct {
            int spacing;
            int n_children;
            struct block **children;
        } group;
    };
};

void block_update(block_t *block);

void block_copy(block_t *copy, const block_t *block);

void block_free(block_t *block);

#endif