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#include "irc_cmd.h"

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#include <stdlib.h>

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#include <string.h>

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void irc_cmd_init (struct irc_cmd_handlers *handlers)

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{

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    CHAIN_INIT(handlers);

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}

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err_t irc_cmd_add (struct irc_cmd_handlers *handlers, const struct irc_cmd_handler list[], void *arg)

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{

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    struct irc_cmd_table *table;

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    // alloc/add

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    if ((table = CHAIN_ADD_TAIL(handlers)) == NULL)

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        return ERR_MEM;

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    // store

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    table->list = list;

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    table->arg = arg;

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    // ok

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    return SUCCESS;

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}

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void irc_cmd_invoke (struct irc_cmd_handlers *handlers, const struct irc_line *line)

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{

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    struct irc_cmd_table *table;

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    const struct irc_cmd_handler *handler;

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    CHAIN_FOREACH_SAFE(handlers, table) {

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        // look up appropriate handler

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        for (handler = table->list; handler->command; handler++) {

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            // the command is alpha-only, so normal case-insensitive cmp is fine

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            if (strcasecmp(handler->command, line->command) == 0) {

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                // invoke the func

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                handler->func(line, table->arg);

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                // ...only one per chain

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                break;

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            }

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        }

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    }

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}

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void irc_cmd_remove (struct irc_cmd_handlers *handlers, const struct irc_cmd_handler list[], void *arg)

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{

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    struct irc_cmd_table *table;

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    // delete all matching items

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    CHAIN_DELETE_WHICH(handlers, table, table->list == list && table->arg == arg);

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}

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void irc_cmd_clear (struct irc_cmd_handlers *handlers)

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{

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    CHAIN_CLEAR(handlers);

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}

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