-module(telega@flow@action).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/telega/flow/action.gleam").
-export([next/3, unsafe_next/3, goto/3, back/2, complete/2, cancel/2, wait/2, wait_callback/2, wait_with_timeout/3, wait_callback_with_timeout/3, exit/3, enter_subflow/4, return_from_subflow/3, 'try'/4, try_with_message/5]).

-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(" Pure control functions that construct `FlowAction` values.\n").

-file("src/telega/flow/action.gleam", 14).
?DOC(" Next navigation\n").
-spec next(
    telega@bot:context(BKTP, BKTQ, BKTR),
    telega@flow@types:flow_instance(),
    BKTV
) -> {ok,
        {telega@bot:context(BKTP, BKTQ, BKTR),
            telega@flow@types:flow_action(BKTV),
            telega@flow@types:flow_instance()}} |
    {error, BKTQ}.
next(Ctx, Instance, Step) ->
    {ok, {Ctx, {next, Step}, Instance}}.

-file("src/telega/flow/action.gleam", 23).
?DOC(" Next navigation with string step (for dynamic navigation)\n").
-spec unsafe_next(
    telega@bot:context(BKUA, BKUB, BKUC),
    telega@flow@types:flow_instance(),
    binary()
) -> {ok,
        {telega@bot:context(BKUA, BKUB, BKUC),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKUB}.
unsafe_next(Ctx, Instance, Step) ->
    {ok, {Ctx, {next_string, Step}, Instance}}.

-file("src/telega/flow/action.gleam", 32).
?DOC(" Type-safe goto navigation (clears step data)\n").
-spec goto(
    telega@bot:context(BKUL, BKUM, BKUN),
    telega@flow@types:flow_instance(),
    BKUR
) -> {ok,
        {telega@bot:context(BKUL, BKUM, BKUN),
            telega@flow@types:flow_action(BKUR),
            telega@flow@types:flow_instance()}} |
    {error, BKUM}.
goto(Ctx, Instance, Step) ->
    {ok, {Ctx, {go_to, Step}, Instance}}.

-file("src/telega/flow/action.gleam", 41).
?DOC(" Go back to previous step\n").
-spec back(
    telega@bot:context(BKUW, BKUX, BKUY),
    telega@flow@types:flow_instance()
) -> {ok,
        {telega@bot:context(BKUW, BKUX, BKUY),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKUX}.
back(Ctx, Instance) ->
    {ok, {Ctx, back, Instance}}.

-file("src/telega/flow/action.gleam", 49).
?DOC(" Complete the flow\n").
-spec complete(
    telega@bot:context(BKVH, BKVI, BKVJ),
    telega@flow@types:flow_instance()
) -> {ok,
        {telega@bot:context(BKVH, BKVI, BKVJ),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKVI}.
complete(Ctx, Instance) ->
    {ok,
        {Ctx,
            {complete, erlang:element(3, erlang:element(6, Instance))},
            Instance}}.

-file("src/telega/flow/action.gleam", 57).
?DOC(" Cancel the flow\n").
-spec cancel(
    telega@bot:context(BKVS, BKVT, BKVU),
    telega@flow@types:flow_instance()
) -> {ok,
        {telega@bot:context(BKVS, BKVT, BKVU),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKVT}.
cancel(Ctx, Instance) ->
    {ok, {Ctx, cancel, Instance}}.

-file("src/telega/flow/action.gleam", 65).
?DOC(" Wait for user input\n").
-spec wait(
    telega@bot:context(BKWD, BKWE, BKWF),
    telega@flow@types:flow_instance()
) -> {ok,
        {telega@bot:context(BKWD, BKWE, BKWF),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKWE}.
wait(Ctx, Instance) ->
    {ok, {Ctx, wait, Instance}}.

-file("src/telega/flow/action.gleam", 73).
?DOC(" Wait for callback\n").
-spec wait_callback(
    telega@bot:context(BKWO, BKWP, BKWQ),
    telega@flow@types:flow_instance()
) -> {ok,
        {telega@bot:context(BKWO, BKWP, BKWQ),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKWP}.
wait_callback(Ctx, Instance) ->
    {ok, {Ctx, wait_callback, Instance}}.

-file("src/telega/flow/action.gleam", 81).
?DOC(" Wait for user input with timeout\n").
-spec wait_with_timeout(
    telega@bot:context(BKWZ, BKXA, BKXB),
    telega@flow@types:flow_instance(),
    integer()
) -> {ok,
        {telega@bot:context(BKWZ, BKXA, BKXB),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKXA}.
wait_with_timeout(Ctx, Instance, Timeout_ms) ->
    {ok, {Ctx, {wait_with_timeout, Timeout_ms}, Instance}}.

-file("src/telega/flow/action.gleam", 90).
?DOC(" Wait for callback with timeout\n").
-spec wait_callback_with_timeout(
    telega@bot:context(BKXK, BKXL, BKXM),
    telega@flow@types:flow_instance(),
    integer()
) -> {ok,
        {telega@bot:context(BKXK, BKXL, BKXM),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKXL}.
wait_callback_with_timeout(Ctx, Instance, Timeout_ms) ->
    {ok, {Ctx, {wait_callback_with_timeout, Timeout_ms}, Instance}}.

-file("src/telega/flow/action.gleam", 99).
?DOC(" Exit with result\n").
-spec exit(
    telega@bot:context(BKXV, BKXW, BKXX),
    telega@flow@types:flow_instance(),
    gleam@option:option(gleam@dict:dict(binary(), binary()))
) -> {ok,
        {telega@bot:context(BKXV, BKXW, BKXX),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKXW}.
exit(Ctx, Instance, Result) ->
    {ok, {Ctx, {exit, Result}, Instance}}.

-file("src/telega/flow/action.gleam", 112).
?DOC(
    " Enter a subflow by name\n"
    "\n"
    " This pushes the current flow state onto the stack and starts the subflow.\n"
    " When the subflow completes with `return_from_subflow`, execution returns\n"
    " to the parent flow at the step specified in `add_subflow`.\n"
).
-spec enter_subflow(
    telega@bot:context(BKYJ, BKYK, BKYL),
    telega@flow@types:flow_instance(),
    binary(),
    gleam@dict:dict(binary(), binary())
) -> {ok,
        {telega@bot:context(BKYJ, BKYK, BKYL),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKYK}.
enter_subflow(Ctx, Instance, Subflow_name, Data) ->
    {ok, {Ctx, {enter_subflow, Subflow_name, Data}, Instance}}.

-file("src/telega/flow/action.gleam", 125).
?DOC(
    " Return from a subflow with result data\n"
    "\n"
    " This pops the parent flow from the stack and merges the result data\n"
    " into the parent's state, then continues at the return step.\n"
).
-spec return_from_subflow(
    telega@bot:context(BKYW, BKYX, BKYY),
    telega@flow@types:flow_instance(),
    gleam@dict:dict(binary(), binary())
) -> {ok,
        {telega@bot:context(BKYW, BKYX, BKYY),
            telega@flow@types:flow_action(any()),
            telega@flow@types:flow_instance()}} |
    {error, BKYX}.
return_from_subflow(Ctx, Instance, Result) ->
    {ok, {Ctx, {return_from_subflow, Result}, Instance}}.

-file("src/telega/flow/action.gleam", 142).
?DOC(
    " Try a result, cancelling the flow on error.\n"
    "\n"
    " Designed for `use` syntax to flatten nested error handling in flow steps:\n"
    "\n"
    " ```gleam\n"
    " use _ <- action.try(ctx, instance, reply.with_text(ctx, \"Hello!\"))\n"
    " use data <- action.try(ctx, instance, fetch_data())\n"
    " action.complete(ctx, instance)\n"
    " ```\n"
).
-spec 'try'(
    telega@bot:context(BKZJ, BKZK, BKZL),
    telega@flow@types:flow_instance(),
    {ok, BKZP} | {error, any()},
    fun((BKZP) -> {ok,
            {telega@bot:context(BKZJ, BKZK, BKZL),
                telega@flow@types:flow_action(BKZT),
                telega@flow@types:flow_instance()}} |
        {error, BKZK})
) -> {ok,
        {telega@bot:context(BKZJ, BKZK, BKZL),
            telega@flow@types:flow_action(BKZT),
            telega@flow@types:flow_instance()}} |
    {error, BKZK}.
'try'(Ctx, Instance, Result, Continue) ->
    case Result of
        {ok, Value} ->
            Continue(Value);

        {error, _} ->
            cancel(Ctx, Instance)
    end.

-file("src/telega/flow/action.gleam", 166).
?DOC(
    " Try a result, sending an error message and cancelling the flow on error.\n"
    "\n"
    " The `to_message` function converts the error into a user-facing message\n"
    " that is sent via `reply.with_text` before cancelling.\n"
    "\n"
    " ```gleam\n"
    " use data <- action.try_with_message(ctx, instance,\n"
    "   extract_data(instance),\n"
    "   fn(err) { \"❌ Error: \" <> err },\n"
    " )\n"
    " action.complete(ctx, instance)\n"
    " ```\n"
).
-spec try_with_message(
    telega@bot:context(BLAC, BLAD, BLAE),
    telega@flow@types:flow_instance(),
    {ok, BLAI} | {error, BLAJ},
    fun((BLAJ) -> binary()),
    fun((BLAI) -> {ok,
            {telega@bot:context(BLAC, BLAD, BLAE),
                telega@flow@types:flow_action(BLAM),
                telega@flow@types:flow_instance()}} |
        {error, BLAD})
) -> {ok,
        {telega@bot:context(BLAC, BLAD, BLAE),
            telega@flow@types:flow_action(BLAM),
            telega@flow@types:flow_instance()}} |
    {error, BLAD}.
try_with_message(Ctx, Instance, Result, To_message, Continue) ->
    case Result of
        {ok, Value} ->
            Continue(Value);

        {error, Err} ->
            _ = telega@reply:with_text(Ctx, To_message(Err)),
            cancel(Ctx, Instance)
    end.