-module(inlay@component).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/inlay/component.gleam").
-export([init/1, update/3, view/2, embed_component/1, configure/1, register/0, embed_element/1]).
-export_type([model/0, resolution/0, msg/0]).

-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.

?MODULEDOC(
    " A single universal Lustre component for every inlay provider.\n"
    "\n"
    " Register one custom element, `<inlay-embed url=\"…\">`, that auto-detects the\n"
    " provider from its `url` attribute and renders the matching embed. Configure\n"
    " it imperatively with [`configure`](#configure) (or [`register`](#register)\n"
    " for the default configuration) from a browser `main`, then use the tag in\n"
    " your markup or the [`embed_element`](#embed_element) helper in a Lustre view.\n"
    "\n"
    " Registration only takes effect in the browser; on other targets `register`\n"
    " returns `lustre.NotABrowser` and [`embed_element`](#embed_element) still\n"
    " serialises to the plain custom-element tag.\n"
).

-type model() :: {model,
        gleam@option:option(binary()),
        gleam@option:option(boolean()),
        gleam@option:option(binary()),
        gleam@option:option(binary()),
        resolution()}.

-type resolution() :: static | resolving | {resolved, binary()} | failed.

-type msg() :: {url_changed, binary()} |
    {no_cookie_changed, boolean()} |
    {parent_changed, binary()} |
    {aspect_ratio_changed, binary()} |
    {got_did, {ok, binary()} | {error, rsvp:error(binary())}}.

-file("src/inlay/component.gleam", 79).
?DOC(
    " Install the embed resize listener on the component's shadow root once it has\n"
    " been painted. The listener resizes self-contained embed iframes from the\n"
    " provider height messages. It is browser-only; on other targets `after_paint`\n"
    " effects never run.\n"
).
-spec install_resize_listener_effect() -> lustre@effect:effect(msg()).
install_resize_listener_effect() ->
    lustre@effect:after_paint(
        fun(_, Root) -> inlay_component_ffi:install_resize_listener(Root) end
    ).

-file("src/inlay/component.gleam", 62).
?DOC(" Initialise the component model before any attribute has been received.\n").
-spec init(nil) -> {model(), lustre@effect:effect(msg())}.
init(_) ->
    {{model, none, none, none, none, static}, install_resize_listener_effect()}.

-file("src/inlay/component.gleam", 186).
-spec prefer(gleam@option:option(SPA), gleam@option:option(SPA)) -> gleam@option:option(SPA).
prefer(Override, Fallback) ->
    case Override of
        {some, _} ->
            Override;

        none ->
            Fallback
    end.

-file("src/inlay/component.gleam", 179).
-spec optional(gleam@option:option(SOY), SOY) -> SOY.
optional(Override, Fallback) ->
    case Override of
        {some, Value} ->
            Value;

        none ->
            Fallback
    end.

-file("src/inlay/component.gleam", 163).
?DOC(
    " Layer this element's per-embed overrides onto the captured base config. Only\n"
    " the providers whose rendering can be tuned per embed are affected.\n"
).
-spec effective_config(inlay@embed:config(), model()) -> inlay@embed:config().
effective_config(Config, Model) ->
    Youtube@1 = case erlang:element(2, Config) of
        {some, Youtube} ->
            {some,
                {youtube_config,
                    optional(
                        erlang:element(3, Model),
                        erlang:element(2, Youtube)
                    ),
                    prefer(erlang:element(5, Model), erlang:element(3, Youtube))}};

        none ->
            none
    end,
    Twitch = case erlang:element(4, Model) of
        {some, Parent} ->
            {some, inlay@embed:twitch_config(Parent)};

        none ->
            erlang:element(9, Config)
    end,
    {config,
        Youtube@1,
        erlang:element(3, Config),
        erlang:element(4, Config),
        erlang:element(5, Config),
        erlang:element(6, Config),
        erlang:element(7, Config),
        erlang:element(8, Config),
        Twitch,
        erlang:element(10, Config),
        erlang:element(11, Config),
        erlang:element(12, Config),
        erlang:element(13, Config),
        erlang:element(14, Config),
        erlang:element(15, Config)}.

-file("src/inlay/component.gleam", 89).
?DOC(
    " Advance the component model in response to a message, using `config` as the\n"
    " base configuration before per-embed overrides are applied.\n"
).
-spec update(inlay@embed:config(), model(), msg()) -> {model(),
    lustre@effect:effect(msg())}.
update(Config, Model, Msg) ->
    case Msg of
        {url_changed, Url} ->
            Model@1 = {model,
                {some, Url},
                erlang:element(3, Model),
                erlang:element(4, Model),
                erlang:element(5, Model),
                erlang:element(6, Model)},
            case inlay@detect:detect_with(
                Url,
                effective_config(Config, Model@1)
            ) of
                {some, {bluesky_post, Handle, _}} ->
                    case inlay@bluesky:needs_resolution(Handle) of
                        true ->
                            {{model,
                                    erlang:element(2, Model@1),
                                    erlang:element(3, Model@1),
                                    erlang:element(4, Model@1),
                                    erlang:element(5, Model@1),
                                    resolving},
                                inlay@bluesky:resolve_effect(
                                    Handle,
                                    fun(Field@0) -> {got_did, Field@0} end
                                )};

                        false ->
                            {{model,
                                    erlang:element(2, Model@1),
                                    erlang:element(3, Model@1),
                                    erlang:element(4, Model@1),
                                    erlang:element(5, Model@1),
                                    static},
                                lustre@effect:none()}
                    end;

                _ ->
                    {{model,
                            erlang:element(2, Model@1),
                            erlang:element(3, Model@1),
                            erlang:element(4, Model@1),
                            erlang:element(5, Model@1),
                            static},
                        lustre@effect:none()}
            end;

        {no_cookie_changed, No_cookie} ->
            {{model,
                    erlang:element(2, Model),
                    {some, No_cookie},
                    erlang:element(4, Model),
                    erlang:element(5, Model),
                    static},
                lustre@effect:none()};

        {parent_changed, Parent} ->
            {{model,
                    erlang:element(2, Model),
                    erlang:element(3, Model),
                    {some, Parent},
                    erlang:element(5, Model),
                    static},
                lustre@effect:none()};

        {aspect_ratio_changed, Aspect_ratio} ->
            {{model,
                    erlang:element(2, Model),
                    erlang:element(3, Model),
                    erlang:element(4, Model),
                    {some, Aspect_ratio},
                    static},
                lustre@effect:none()};

        {got_did, {ok, Did}} ->
            {{model,
                    erlang:element(2, Model),
                    erlang:element(3, Model),
                    erlang:element(4, Model),
                    erlang:element(5, Model),
                    {resolved, Did}},
                lustre@effect:none()};

        {got_did, {error, _}} ->
            {{model,
                    erlang:element(2, Model),
                    erlang:element(3, Model),
                    erlang:element(4, Model),
                    erlang:element(5, Model),
                    failed},
                lustre@effect:none()}
    end.

-file("src/inlay/component.gleam", 143).
-spec link(binary()) -> lustre@vdom@vnode:element(any()).
link(Url) ->
    lustre@element@html:a(
        [lustre@attribute:href(Url)],
        [lustre@element:text(Url)]
    ).

-file("src/inlay/component.gleam", 150).
?DOC(
    " Render a Bluesky post that needs no handle resolution. A handle already in\n"
    " `did:` form is itself the DID, so the embed iframe renders directly;\n"
    " anything else falls back to a link.\n"
).
-spec bluesky_static_view(inlay@embed:config(), binary(), binary()) -> lustre@vdom@vnode:element(any()).
bluesky_static_view(Config, Handle, Rkey) ->
    case inlay@bluesky:needs_resolution(Handle) of
        false ->
            inlay@inline:bluesky_iframe(
                Handle,
                Rkey,
                inlay@detect:bluesky_height(Config)
            );

        true ->
            inlay@bluesky:fallback_view(Handle, Rkey)
    end.

-file("src/inlay/component.gleam", 124).
?DOC(
    " Render the current component model to HTML, using `config` as the base\n"
    " configuration before per-embed overrides are applied.\n"
).
-spec view(inlay@embed:config(), model()) -> lustre@vdom@vnode:element(any()).
view(Config, Model) ->
    Config@1 = effective_config(Config, Model),
    case erlang:element(2, Model) of
        none ->
            lustre@element:none();

        {some, Url} ->
            case inlay@detect:detect_with(Url, Config@1) of
                {some, {bluesky_post, Handle, Rkey}} ->
                    case erlang:element(6, Model) of
                        {resolved, Did} ->
                            inlay@inline:bluesky_iframe(
                                Did,
                                Rkey,
                                inlay@detect:bluesky_height(Config@1)
                            );

                        resolving ->
                            inlay@bluesky:fallback_view(Handle, Rkey);

                        failed ->
                            inlay@bluesky:fallback_view(Handle, Rkey);

                        static ->
                            bluesky_static_view(Config@1, Handle, Rkey)
                    end;

                {some, Found} ->
                    inlay@detect:render_inline_with(Found, Config@1);

                none ->
                    link(Url)
            end
    end.

-file("src/inlay/component.gleam", 198).
?DOC(
    " The `<inlay-embed>` component configured with the given base config.\n"
    "\n"
    " The config is captured in the component's `update`/`view` closures. Pass it\n"
    " to [`lustre.register`](https://hexdocs.pm/lustre/lustre.html#register) (see\n"
    " [`configure`](#configure)) or run it as a server component.\n"
).
-spec embed_component(inlay@embed:config()) -> lustre@runtime@app:app(nil, model(), msg()).
embed_component(Config) ->
    lustre:component(
        fun init/1,
        fun(Model, Msg) -> update(Config, Model, Msg) end,
        fun(Model@1) -> view(Config, Model@1) end,
        [lustre@component:on_attribute_change(
                <<"url"/utf8>>,
                fun(Value) -> {ok, {url_changed, Value}} end
            ),
            lustre@component:on_attribute_change(
                <<"no-cookie"/utf8>>,
                fun(Value@1) ->
                    {ok, {no_cookie_changed, Value@1 /= <<"false"/utf8>>}}
                end
            ),
            lustre@component:on_attribute_change(
                <<"parent"/utf8>>,
                fun(Value@2) -> {ok, {parent_changed, Value@2}} end
            ),
            lustre@component:on_attribute_change(
                <<"aspect-ratio"/utf8>>,
                fun(Value@3) -> {ok, {aspect_ratio_changed, Value@3}} end
            ),
            lustre@component:open_shadow_root(true)]
    ).

-file("src/inlay/component.gleam", 225).
?DOC(
    " Register `<inlay-embed>` with the given base configuration. Call this once\n"
    " from a browser `main` before rendering any `<inlay-embed>` tags.\n"
    "\n"
    " Registration is browser-only; on other targets it returns\n"
    " `lustre.NotABrowser`. Calling it more than once yields\n"
    " `lustre.ComponentAlreadyRegistered`.\n"
).
-spec configure(inlay@embed:config()) -> {ok, nil} | {error, lustre:error()}.
configure(Config) ->
    lustre:register(embed_component(Config), <<"inlay-embed"/utf8>>).

-file("src/inlay/component.gleam", 230).
?DOC(" Register `<inlay-embed>` with the default configuration.\n").
-spec register() -> {ok, nil} | {error, lustre:error()}.
register() ->
    configure(inlay@embed:default_config()).

-file("src/inlay/component.gleam", 235).
?DOC(" Render the `<inlay-embed>` custom-element tag with the given attributes.\n").
-spec embed_element(list(lustre@vdom@vattr:attribute(SPL))) -> lustre@vdom@vnode:element(SPL).
embed_element(Attributes) ->
    lustre@element:element(<<"inlay-embed"/utf8>>, Attributes, []).