| 1 |
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-module(mongoose_graphql_scalar). |
| 2 |
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-export([input/2, output/2]). |
| 3 |
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-ignore_xref([input/2, output/2]). |
| 4 |
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| 5 |
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-spec input(Type, Value) -> {ok, Coerced} | {error, Reason} |
| 6 |
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when |
| 7 |
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Type :: binary(), |
| 8 |
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Value :: binary(), |
| 9 |
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Coerced :: any(), |
| 10 |
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Reason :: term(). |
| 11 |
:-( |
input(<<"DateTime">>, DT) -> binary_to_microseconds(DT); |
| 12 |
:-( |
input(<<"Stanza">>, Value) -> exml:parse(Value); |
| 13 |
123 |
input(<<"JID">>, Jid) -> jid_from_binary(Jid); |
| 14 |
8 |
input(<<"NonEmptyString">>, Value) -> non_empty_string_to_binary(Value); |
| 15 |
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input(Ty, V) -> |
| 16 |
:-( |
error_logger:info_report({coercing_generic_scalar, Ty, V}), |
| 17 |
:-( |
{ok, V}. |
| 18 |
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|
| 19 |
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-spec output(Type, Value) -> {ok, Coerced} | {error, Reason} |
| 20 |
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when |
| 21 |
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Type :: binary(), |
| 22 |
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Value :: binary(), |
| 23 |
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Coerced :: any(), |
| 24 |
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Reason :: term(). |
| 25 |
:-( |
output(<<"DateTime">>, DT) -> {ok, microseconds_to_binary(DT)}; |
| 26 |
:-( |
output(<<"Stanza">>, Elem) -> {ok, exml:to_binary(Elem)}; |
| 27 |
49 |
output(<<"JID">>, Jid) -> {ok, jid:to_binary(Jid)}; |
| 28 |
:-( |
output(<<"NonEmptyString">>, Value) -> binary_to_non_empty_string(Value); |
| 29 |
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output(Ty, V) -> |
| 30 |
:-( |
error_logger:info_report({output_generic_scalar, Ty, V}), |
| 31 |
:-( |
{ok, V}. |
| 32 |
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|
| 33 |
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jid_from_binary(Value) -> |
| 34 |
123 |
case jid:from_binary(Value) of |
| 35 |
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error -> |
| 36 |
:-( |
{error, failed_to_parse_jid}; |
| 37 |
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Jid -> |
| 38 |
123 |
{ok, Jid} |
| 39 |
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end. |
| 40 |
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|
| 41 |
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binary_to_microseconds(DT) -> |
| 42 |
:-( |
case mod_mam_utils:maybe_microseconds(DT) of |
| 43 |
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undefined -> |
| 44 |
:-( |
{error, failed_to_parse_datetime}; |
| 45 |
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Microseconds -> |
| 46 |
:-( |
{ok, Microseconds} |
| 47 |
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end. |
| 48 |
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| 49 |
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non_empty_string_to_binary(<<>>) -> |
| 50 |
2 |
{error, "Given string is empty"}; |
| 51 |
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non_empty_string_to_binary(String) -> |
| 52 |
6 |
{ok, String}. |
| 53 |
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|
| 54 |
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binary_to_non_empty_string(<<>>) -> |
| 55 |
:-( |
{error, "Empty binary cannot be converted to NonEmptyString"}; |
| 56 |
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binary_to_non_empty_string(Val) -> |
| 57 |
:-( |
{ok, Val}. |
| 58 |
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|
| 59 |
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microseconds_to_binary(Microseconds) -> |
| 60 |
:-( |
Opts = [{offset, "Z"}, {unit, microsecond}], |
| 61 |
:-( |
list_to_binary(calendar:system_time_to_rfc3339(Microseconds, Opts)). |