-module(temporal_sdk_api_common).

% elp:ignore W0012 W0040
-moduledoc false.

-export([
    retry_policy/1,
    get_by_casted_key/4,
    mutation_reset_reason/1,
    marker_encode_value/2,
    marker_decode_value/2,
    run_request/6,
    run_request/7,
    transform_workflow_execution/1,
    put_run_id/3,
    format_response/4,
    t2e/3
]).

-include("proto.hrl").

-spec retry_policy(RetryPolicy :: temporal_sdk:retry_policy()) ->
    ?TEMPORAL_SPEC:'temporal.api.common.v1.RetryPolicy'().
retry_policy(RetryPolicy) ->
    RP1 =
        case RetryPolicy of
            #{initial_interval := II} ->
                RetryPolicy#{initial_interval := temporal_sdk_utils_time:msec_to_protobuf(II)};
            #{} ->
                RetryPolicy
        end,
    case RP1 of
        #{maximum_interval := MI} ->
            RP1#{maximum_interval := temporal_sdk_utils_time:msec_to_protobuf(MI)};
        #{} ->
            RP1
    end.

-spec get_by_casted_key(
    Key :: term(),
    Map :: map(),
    Default :: term(),
    ApiCtx :: temporal_sdk_api:context()
) -> {CastedKey :: unicode:chardata(), Value :: term()}.
get_by_casted_key(Key, Map, Default, #{client_opts := #{grpc_opts := #{codec := {Codec, _, _}}}}) ->
    CastedKey = Codec:cast(Key),
    case Map of
        #{CastedKey := V} -> {CastedKey, V};
        #{} -> {CastedKey, Default}
    end.

-spec mutation_reset_reason(Name :: unicode:chardata() | atom()) -> {string(), binary()}.
mutation_reset_reason(Name) ->
    Str = temporal_sdk_utils_path:string_path([?MUTATION_RESET_PREFIX, Name], ":"),
    {Str, temporal_sdk_utils_unicode:characters_to_binary1(Str)}.

-spec marker_encode_value(
    Codec :: temporal_sdk_workflow:marker_value_codec(),
    Value :: temporal_sdk:term_to_payloads() | term()
) ->
    {ok, EncodedValue :: temporal_sdk:term_to_payloads(),
        Decoder ::
            none
            | list
            | dlist
            | term
            | fun((temporal_sdk:term_from_payloads()) -> term())
            | {Module :: module(), Function :: atom()}}
    | {error, Reason :: map()}.
marker_encode_value(list, Value) ->
    {ok, [Value], list};
marker_encode_value(dlist, Value) ->
    {ok, [[Value]], list};
marker_encode_value(term, Value) ->
    {ok, [erlang:term_to_binary(Value)], term};
marker_encode_value(none, Value) when is_list(Value) ->
    {ok, Value, none};
marker_encode_value({none, none}, Value) when is_list(Value) ->
    {ok, Value, none};
marker_encode_value({none, DF}, Value) when is_list(Value), is_function(DF, 1) ->
    {ok, Value, DF};
marker_encode_value({none, {DM, DF}}, Value) when is_list(Value), is_atom(DM), is_atom(DF) ->
    {ok, Value, {DM, DF}};
marker_encode_value({EF, none}, Value) when is_function(EF, 1) ->
    case EF(Value) of
        EV when is_list(EV) -> {ok, EV, none};
        EV -> do_encode_type_err(EF, Value, EV)
    end;
marker_encode_value({{EM, EF}, none}, Value) when is_atom(EM), is_atom(EF) ->
    case EM:EF(Value) of
        EV when is_list(EV) -> {ok, EV, none};
        EV -> do_encode_type_err({EM, EF}, Value, EV)
    end;
marker_encode_value({EF, none}, Value) when is_function(EF, 1) ->
    case EF(Value) of
        EV when is_list(EV) -> {ok, EV, none};
        EV -> do_encode_type_err(EF, Value, EV)
    end;
marker_encode_value({EF, DF}, Value) when is_function(EF, 1), is_function(DF, 1) ->
    case EF(Value) of
        EV when is_list(EV) -> {ok, EV, none};
        EV -> do_encode_type_err(EF, Value, EV)
    end;
marker_encode_value({EF, {DM, DF}}, Value) when is_function(EF, 1), is_atom(DM), is_atom(DF) ->
    case EF(Value) of
        EV when is_list(EV) -> {ok, EV, {DM, DF}};
        EV -> do_encode_type_err(EF, Value, EV)
    end;
marker_encode_value(Codec, Value) ->
    {error, #{
        reason => "Invalid marker value type or invalid marker <value_codec> configuration.",
        marker_value => Value,
        marker_value_codec => Codec
    }}.

do_encode_type_err(Encoder, Value, EncodedValue) ->
    {error, #{
        reason => "Invalid encoded marker value type. Expected a list() type.",
        marker_value => Value,
        invalid_encoded_marker_value => EncodedValue,
        encoder => Encoder
    }}.

-spec marker_decode_value(
    Decoder ::
        none
        | list
        | dlist
        | term
        | fun((temporal_sdk:term_from_payloads()) -> term())
        | {Module :: module(), Function :: atom()},
    Value :: temporal_sdk:term_from_payloads()
) -> DecodedValue :: term().
marker_decode_value(list, [Value]) -> Value;
marker_decode_value(dlist, [[Value]]) -> Value;
marker_decode_value(term, [Value]) -> erlang:binary_to_term(Value);
marker_decode_value(none, Value) -> Value;
marker_decode_value(DF, Value) when is_function(DF, 1) -> DF(Value);
marker_decode_value({DM, DF}, Value) when is_atom(DM), is_atom(DF) -> DM:DF(Value).

-spec run_request(
    Cluster :: temporal_sdk_cluster:cluster_name(),
    Opts :: proplists:proplist(),
    DefaultOpts :: temporal_sdk_utils_opts:defaults(),
    ServiceName :: temporal_sdk_api:temporal_service(),
    RequestMessageName :: temporal_sdk_client:msg_name(),
    ResponseMessageName :: temporal_sdk_client:msg_name()
) -> temporal_sdk:response().
run_request(Cluster, Opts, DefaultOpts, ServiceName, RequestMessageName, ResponseMessageName) ->
    run_request(
        Cluster, Opts, DefaultOpts, ServiceName, RequestMessageName, ResponseMessageName, []
    ).

-spec run_request(
    Cluster :: temporal_sdk_cluster:cluster_name(),
    Opts :: proplists:proplist(),
    DefaultOpts :: temporal_sdk_utils_opts:defaults(),
    ServiceName :: temporal_sdk_api:temporal_service(),
    RequestMessageName :: temporal_sdk_client:msg_name(),
    ResponseMessageName :: temporal_sdk_client:msg_name(),
    Customizations :: proplists:proplist()
) -> temporal_sdk:response().
run_request(
    Cluster, Opts, DefaultOpts, ServiceName, RequestMessageName, ResponseMessageName, Customizations
) ->
    maybe
        {ok, ApiCtx} ?= temporal_sdk_api_context:build(Cluster),
        {ok, FullOpts} ?= temporal_sdk_utils_opts:build(DefaultOpts, Opts, ApiCtx),
        ok ?= maybe_evict(Cluster, FullOpts, proplists:to_map(Customizations)),
        {RawRequest, O1} = maps:take(raw_request, FullOpts),
        {ResponseType, O2} = maps:take(response_type, O1),
        {GrpcOpts, O3} = maps:take(grpc_opts, O2),
        Req1 = maps:merge(O3, RawRequest),
        Req = do_custom(Customizations, ApiCtx, RequestMessageName, Req1),
        Response = temporal_sdk_api:request(ServiceName, Cluster, Req, ResponseType, GrpcOpts),
        format_response(ResponseMessageName, ResponseType, Response, ApiCtx)
    end.

maybe_evict(
    Cluster,
    #{namespace := Namespace},
    #{evict := EvictReason, workflow_execution := WorkflowExecution}
) ->
    WE =
        case WorkflowExecution of
            {_, W} -> W;
            W -> W
        end,
    temporal_sdk:evict_workflow(Cluster, WE, [{namespace, Namespace}, {reason, EvictReason}]);
maybe_evict(_Cluster, _Opts, _Customizations) ->
    ok.

do_custom([{new, {Key, Val}} | TC], ApiCtx, MsgName, Req) ->
    do_custom(TC, ApiCtx, MsgName, Req#{Key => Val});
do_custom([{nested, {PKey, CKeys}} | TC], ApiCtx, MsgName, Req) ->
    R = maps:without(CKeys, Req),
    do_custom(TC, ApiCtx, MsgName, R#{PKey => maps:with(CKeys, Req)});
do_custom([{workflow_execution, {Key, WE}} | TC], ApiCtx, MsgName, Req) ->
    do_custom(TC, ApiCtx, MsgName, Req#{Key => transform_workflow_execution(WE)});
do_custom([{workflow_execution, WE} | TC], ApiCtx, MsgName, Req) ->
    do_custom([{workflow_execution, {workflow_execution, WE}} | TC], ApiCtx, MsgName, Req);
do_custom([identity | TC], ApiCtx, MsgName, Req) ->
    do_custom(TC, ApiCtx, MsgName, temporal_sdk_api:put_identity(ApiCtx, MsgName, Req));
do_custom([id | TC], ApiCtx, MsgName, Req) ->
    do_custom([{id, id} | TC], ApiCtx, MsgName, Req);
do_custom([{id, Key} | TC], ApiCtx, MsgName, Req) ->
    do_custom(TC, ApiCtx, MsgName, temporal_sdk_api:put_id(ApiCtx, MsgName, Key, Req));
do_custom([{evict, _} | TC], ApiCtx, MsgName, Req) ->
    do_custom(TC, ApiCtx, MsgName, Req);
do_custom([], _ApiCtx, _MsgName, Req) ->
    Req.

-spec transform_workflow_execution(
    WorkflowExecutionOrId :: temporal_sdk:workflow_execution_or_id()
) -> temporal_sdk:workflow_execution().
transform_workflow_execution(#{workflow_id := _} = WE) -> WE;
transform_workflow_execution(WId) when is_binary(WId); is_list(WId) -> #{workflow_id => WId}.

-spec put_run_id(
    Cluster :: temporal_sdk_cluster:cluster_name(),
    WorkflowExecutionOrId :: temporal_sdk:workflow_execution_or_id(),
    Opts :: map()
) -> {ok, temporal_sdk:workflow_execution()} | {error, Reason :: term()}.
put_run_id(_Cluster, #{run_id := _} = WE, _Opts) ->
    {ok, WE};
put_run_id(Cluster, WorkflowExecutionOrId, #{namespace := Namespace}) ->
    case temporal_sdk:describe_workflow(Cluster, WorkflowExecutionOrId, [{namespace, Namespace}]) of
        {ok, #{workflow_execution_info := #{execution := #{run_id := RunId}}}} ->
            WE = temporal_sdk_api_common:transform_workflow_execution(WorkflowExecutionOrId),
            {ok, WE#{run_id => RunId}};
        {ok, Response} ->
            {error, #{
                reason => "Invalid describe_workflow response - missing run_id.",
                invalid_response => Response
            }};
        Err ->
            % eqwalizer:ignore
            Err
    end.

-spec format_response(
    MessageName :: temporal_sdk_client:msg_name(),
    ResponseType :: temporal_sdk:response_type(),
    Response :: {ok, temporal_sdk_client:msg()} | {error, term()},
    ApiCtx :: temporal_sdk_api:context()
) -> temporal_sdk:response().
format_response(MessageName, call_formatted, {ok, Response}, ApiCtx) ->
    {ok, t2e(MessageName, Response, ApiCtx)};
format_response(
    _MessageName,
    call_formatted,
    {error, #{grpc_response_headers := #{~"grpc-message" := Err}}},
    _ApiCtx
) ->
    {error, Err};
format_response(
    _MessageName,
    call_formatted,
    {error, #{grpc_response_headers := #{"grpc-message" := Err}}},
    _ApiCtx
) ->
    {error, Err};
format_response(_MessageName, _Opts, Response, _ApiCtx) ->
    Response.

-spec t2e(
    MessageName :: temporal_sdk_client:msg_name(),
    Message :: temporal_sdk_client:msg(),
    ApiCtx :: temporal_sdk_api:context()
) -> ConvertedMessage :: map().
t2e(MessageName, Message, ApiCtx) when is_map(Message) ->
    maps:from_list(te(MessageName, maps:to_list(Message), ApiCtx, [], [])).

te(MN, [{K, #{payloads := _} = V} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [
        {K, temporal_sdk_api:map_from_payloads(ApiCtx, MN, KAcc ++ [K], V)} | Acc
    ]);
te(MN, [{K, #{data := _, metadata := _} = V} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [
        {K, temporal_sdk_api:map_from_payload(ApiCtx, MN, KAcc ++ [K], V)} | Acc
    ]);
te(MN, [{header = K, #{fields := V}} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [
        {K, temporal_sdk_api:map_from_mapstring_payload(ApiCtx, MN, KAcc ++ [K, fields], V)} | Acc
    ]);
te(MN, [{memo = K, #{fields := V}} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [
        {K, temporal_sdk_api:map_from_mapstring_payload(ApiCtx, MN, KAcc ++ [K, fields], V)} | Acc
    ]);
te(MN, [{search_attributes = K, #{indexed_fields := V}} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [
        {K, temporal_sdk_api:map_from_mapstring_payload(ApiCtx, MN, KAcc ++ [K, fields], V)} | Acc
    ]);
te(MN, [{workflow_type = K, #{name := N}} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [{K, N} | Acc]);
te(MN, [{task_queue = K, #{name := N}} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [{K, N} | Acc]);
te(MN, [{type = K, #{name := N}} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [{K, N} | Acc]);
te(MN, [{K, #{seconds := _, nanos := _} = T} | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [{K, temporal_sdk_utils_time:protobuf_to_msec(T)} | Acc]);
te(MN, [{K, [#{} | _] = Li} | TM], ApiCtx, KAcc, Acc) ->
    V = lists:map(
        fun(M) when is_map(M) -> maps:from_list(te(MN, maps:to_list(M), ApiCtx, KAcc ++ [K], []))
        end,
        Li
    ),
    te(MN, TM, ApiCtx, KAcc, [{K, V} | Acc]);
te(MN, [{K, #{} = Ma} | TM], ApiCtx, KAcc, Acc) ->
    V = maps:from_list(te(MN, maps:to_list(Ma), ApiCtx, KAcc ++ [K], [])),
    te(MN, TM, ApiCtx, KAcc, [{K, V} | Acc]);
te(MN, [{K, {KT, #{} = Ma}} | TM], ApiCtx, KAcc, Acc) ->
    V = maps:from_list(te(MN, maps:to_list(Ma), ApiCtx, KAcc ++ [K], [])),
    te(MN, TM, ApiCtx, KAcc, [{K, {KT, V}} | Acc]);
te(MN, [KV | TM], ApiCtx, KAcc, Acc) ->
    te(MN, TM, ApiCtx, KAcc, [KV | Acc]);
te(_MN, [], _ApiCtx, _KAcc, Acc) ->
    Acc.