-module(gemqtt).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([new/1, set_tls_opt/3, set_property/3, set_auth/3, set_auto_ack/2, set_clean_start/2, set_client_id/2, set_connect_timeout/2, set_name/2, set_owner/2, set_port/2, set_tls_enabled/2, pid_of/1, start_link/1, connect/1, disconnect/1, stop/1, subscriptions/1]).
-export_type([error/0, options/0, properties/0, qos/0, client/0]).

-type error() :: {already_started, gleam@erlang@process:pid_()} |
    {bad_property, gleam@option:option(gleam@erlang@atom:atom_())} |
    noproc |
    closed |
    timeout |
    eaddrinuse |
    eaddrnotavail |
    eafnosupport |
    ealready |
    econnaborted |
    econnrefused |
    econnreset |
    edestaddrreq |
    ehostdown |
    ehostunreach |
    einprogress |
    eisconn |
    emsgsize |
    enetdown |
    enetunreach |
    enopkg |
    enoprotoopt |
    enotconn |
    enotty |
    enotsock |
    eproto |
    eprotonosupport |
    eprototype |
    esocktnosupport |
    etimedout |
    ewouldblock |
    exbadport |
    exbadseq |
    nxdomain |
    access_denied |
    bad_certificate |
    bad_certificate_hash_value |
    bad_certificate_status_response |
    bad_record_mac |
    certificate_expired |
    certificate_revoked |
    certificate_unknown |
    certificate_unobtainable |
    close_notify |
    decode_error |
    decrypt_error |
    export_restriction |
    handshake_failure |
    illegal_parameter |
    inappropriate_fallback |
    insufficient_security |
    internal_error |
    no_application_protocol |
    no_renegotiation |
    protocol_version |
    record_overflow |
    unexpected_message |
    unknown_ca |
    unknown_psk_identity |
    unrecognized_name |
    unsupported_certificate |
    unsupported_extension |
    user_canceled.

-opaque options() :: {options,
        gleam@dict:dict(gleam@erlang@atom:atom_(), gleam@dynamic:dynamic_()),
        gleam@dict:dict(gleam@erlang@atom:atom_(), gleam@dynamic:dynamic_()),
        properties()}.

-type properties() :: {properties,
        gleam@dict:dict(gleam@erlang@atom:atom_(), gleam@dynamic:dynamic_())}.

-type qos() :: at_most_once | at_least_once | exactly_once.

-opaque client() :: {client, gleam@erlang@process:pid_()}.

-spec new(binary()) -> options().
new(Host) ->
    Host_value = begin
        _pipe = Host,
        _pipe@1 = unicode:characters_to_list(_pipe),
        gleam_stdlib:identity(_pipe@1)
    end,
    Opts = begin
        _pipe@2 = gleam@dict:new(),
        gleam@dict:insert(
            _pipe@2,
            erlang:binary_to_atom(<<"host"/utf8>>),
            Host_value
        )
    end,
    {options, Opts, gleam@dict:new(), {properties, gleam@dict:new()}}.

-spec set_tls_opt(options(), binary(), gleam@dynamic:dynamic_()) -> options().
set_tls_opt(Opts, Name, Value) ->
    erlang:setelement(
        3,
        Opts,
        gleam@dict:insert(
            erlang:element(3, Opts),
            erlang:binary_to_atom(Name),
            gleam_stdlib:identity(Value)
        )
    ).

-spec set_property(options(), binary(), any()) -> options().
set_property(Opts, Name, Value) ->
    {properties, Props} = erlang:element(4, Opts),
    erlang:setelement(
        4,
        Opts,
        {properties,
            gleam@dict:insert(
                Props,
                erlang:binary_to_atom(Name),
                gleam_stdlib:identity(Value)
            )}
    ).

-spec set_option(options(), gleam@erlang@atom:atom_(), any()) -> options().
set_option(Opts, Name, Value) ->
    erlang:setelement(
        2,
        Opts,
        gleam@dict:insert(
            erlang:element(2, Opts),
            Name,
            gleam_stdlib:identity(Value)
        )
    ).

-spec set_auth(options(), binary(), binary()) -> options().
set_auth(Opts, Username, Password) ->
    _pipe = Opts,
    _pipe@1 = set_option(
        _pipe,
        erlang:binary_to_atom(<<"username"/utf8>>),
        Username
    ),
    set_option(_pipe@1, erlang:binary_to_atom(<<"password"/utf8>>), Password).

-spec set_auto_ack(options(), boolean()) -> options().
set_auto_ack(Opts, Ack) ->
    set_option(Opts, erlang:binary_to_atom(<<"auto_ack"/utf8>>), Ack).

-spec set_clean_start(options(), boolean()) -> options().
set_clean_start(Opts, Clean) ->
    set_option(Opts, erlang:binary_to_atom(<<"clean_start"/utf8>>), Clean).

-spec set_client_id(options(), binary()) -> options().
set_client_id(Opts, Id) ->
    set_option(Opts, erlang:binary_to_atom(<<"clientid"/utf8>>), Id).

-spec set_connect_timeout(options(), integer()) -> options().
set_connect_timeout(Opts, Timeout) ->
    set_option(Opts, erlang:binary_to_atom(<<"connect_timeout"/utf8>>), Timeout).

-spec set_name(options(), binary()) -> options().
set_name(Opts, Name) ->
    set_option(
        Opts,
        erlang:binary_to_atom(<<"name"/utf8>>),
        erlang:binary_to_atom(Name)
    ).

-spec set_owner(options(), gleam@erlang@process:pid_()) -> options().
set_owner(Opts, Pid) ->
    set_option(Opts, erlang:binary_to_atom(<<"owner"/utf8>>), Pid).

-spec set_port(options(), integer()) -> options().
set_port(Opts, Port) ->
    set_option(Opts, erlang:binary_to_atom(<<"port"/utf8>>), Port).

-spec set_tls_enabled(options(), boolean()) -> options().
set_tls_enabled(Opts, Tls) ->
    set_option(Opts, erlang:binary_to_atom(<<"ssl"/utf8>>), Tls).

-spec pid_of(client()) -> gleam@erlang@process:pid_().
pid_of(Client) ->
    {client, Pid} = Client,
    Pid.

-spec start_link(options()) -> {ok, client()} | {error, error()}.
start_link(Opts) ->
    {options, Options, Tls_options, {properties, Properties}} = Opts,
    Options@1 = begin
        _pipe = Options,
        _pipe@1 = gleam@dict:insert(
            _pipe,
            erlang:binary_to_atom(<<"properties"/utf8>>),
            gleam_stdlib:identity(Properties)
        ),
        gleam@dict:insert(
            _pipe@1,
            erlang:binary_to_atom(<<"ssl_opts"/utf8>>),
            gleam_stdlib:identity(maps:to_list(Tls_options))
        )
    end,
    emqtt_ffi:start_link(Options@1).

-spec connect(client()) -> {ok, nil} | {error, error()}.
connect(Client) ->
    emqtt_ffi:connect(Client).

-spec disconnect(client()) -> {ok, nil} | {error, error()}.
disconnect(Client) ->
    emqtt_ffi:disconnect(Client).

-spec stop(client()) -> {ok, nil} | {error, error()}.
stop(Client) ->
    emqtt_ffi:stop(Client).

-spec subscriptions(client()) -> list({binary(),
    gleam@dict:dict(gleam@erlang@atom:atom_(), gleam@dynamic:dynamic_())}).
subscriptions(Client) ->
    emqtt_ffi:subscriptions(Client).