#include <string.h>
#include <assert.h>

#include "block.h"
#include "util.h"
#include "action.h"
#include "any_log.h"

extern const block_scheme_t block_text_scheme;

extern const block_scheme_t block_group_scheme;

extern const block_scheme_t block_ram_scheme;

extern const block_scheme_t block_fs_scheme;

extern const block_scheme_t block_date_scheme;

extern const block_scheme_t block_script_scheme;

extern const block_scheme_t block_slider_scheme;

const block_scheme_t *block_schemes[] = {
    &block_text_scheme,
    &block_group_scheme,
    &block_ram_scheme,
    &block_fs_scheme,
    &block_date_scheme,
    &block_script_scheme,
    &block_slider_scheme,
    NULL,
};

void block_update(block_t *block)
{
    if (block->update_fn != NULL) {
        struct timespec now, diff;
        timespec_get(&now, TIME_UTC);
        diff = timespec_diff(now, block->update_last);

        if (timespec_greater(diff, block->update_interval)) {
            log_value_trace("Updating block",
                            "s:label", block->label,
                            "g:ts", ANY_LOG_FORMATTER(timespec_print), &now);

            block->update_fn(block);
            block->update_last = now;
        }
    }

    // NOTE: Block spec should handle its children by itself...
    //
    if (block->type == BLOCK_GROUP) {
        block_group_t *group = (block_group_t *)block;
        for (size_t i = 0; i < group->n_children; i++)
            block_update(group->children[i]);
    }
}

bool block_resolve_action(block_t *block, config_t *config, action_t **action)
{
    if (action == NULL || *action == NULL)
        return true;

    char *label = (char *)*action;

    bool result = config_resolve_action(config, label, action);
    if (!result) {
        log_error("Action '%s' not found (referenced by block '%s')", label, block->label);
    }

    free(label);
    return result;
}

bool block_resolve(block_t *block, config_t *config)
{
    if (block->resolved)
        return true;

    block->resolved = true;

    for (size_t i = 0; i < EVENT_MAX; i++) {
        if (!block_resolve_action(block, config, &block->actions[i]))
            return false;
    }

    return block->scheme->resolve_fn == NULL
        || block->scheme->resolve_fn(block, config);
}

bool block_change(block_t *block, config_t *config, const char *key, const char *value)
{
    extern const config_entry_t block_entries[];

    // Ignore notify invocations
    config_status_t status = key == NULL
                           ? CONFIG_UNKNOWN
                           : config_read_entry(block_entries, block, NULL, key, value);

    if (status == CONFIG_UNKNOWN && block->scheme->change_fn != NULL)
        status = block->scheme->change_fn(block, config, key, value);

    return status == CONFIG_SUCCESS || (!config->action_strict_set && status == CONFIG_UNKNOWN);
}

void block_free(block_t *block)
{
    if (block->scheme->clean_fn != NULL)
        block->scheme->clean_fn(block);

    gradient_clean(&block->bg_color);
    gradient_clean(&block->line_color);

    free(block->label);
    free(block);
}