-module(dream_test@reporter@json).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/dream_test/reporter/json.gleam").
-export([format/1, format_pretty/1, report/2, report_pretty/2]).

-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(
    " JSON test reporter for dream_test.\n"
    "\n"
    " This reporter outputs test results as JSON for CI/CD integration,\n"
    " test aggregation, and tooling.\n"
    "\n"
    " ## Example Output\n"
    "\n"
    " ```json\n"
    " {\n"
    "   \"version\": \"1.0\",\n"
    "   \"timestamp_ms\": 1733151045123,\n"
    "   \"duration_ms\": 315,\n"
    "   \"system\": {\n"
    "     \"os\": \"darwin\",\n"
    "     \"otp_version\": \"27\",\n"
    "     \"gleam_version\": \"0.67.0\"\n"
    "   },\n"
    "   \"summary\": {\n"
    "     \"total\": 3,\n"
    "     \"passed\": 2,\n"
    "     \"failed\": 1,\n"
    "     \"skipped\": 0,\n"
    "     \"pending\": 0,\n"
    "     \"timed_out\": 0,\n"
    "     \"setup_failed\": 0\n"
    "   },\n"
    "   \"tests\": [\n"
    "     {\n"
    "       \"name\": \"adds numbers\",\n"
    "       \"full_name\": [\"Calculator\", \"add\", \"adds numbers\"],\n"
    "       \"status\": \"passed\",\n"
    "       \"duration_ms\": 2,\n"
    "       \"tags\": [],\n"
    "       \"kind\": \"unit\",\n"
    "       \"failures\": []\n"
    "     }\n"
    "   ]\n"
    " }\n"
    " ```\n"
    "\n"
    " ## Usage\n"
    "\n"
    " ```gleam\n"
    " import dream_test/reporter/json\n"
    " import gleam/io\n"
    "\n"
    " pub fn main() {\n"
    "   to_test_cases(\"my_test\", tests())\n"
    "   |> run_all()\n"
    "   |> json.report(io.print)\n"
    "   |> exit_on_failure()\n"
    " }\n"
    " ```\n"
    "\n"
    " ## Combining with BDD Reporter\n"
    "\n"
    " ```gleam\n"
    " results\n"
    " |> bdd.report(io.print)           // Human-readable to stdout\n"
    " |> json.report(write_to_file)     // JSON to file\n"
    " |> exit_on_failure()\n"
    " ```\n"
).

-file("src/dream_test/reporter/json.gleam", 233).
-spec build_payload_fields(
    gleam@option:option(dream_test@types:failure_payload())
) -> list({binary(), gleam@json:json()}).
build_payload_fields(Payload) ->
    case Payload of
        none ->
            [];

        {some, {equality_failure, Actual, Expected}} ->
            [{<<"expected"/utf8>>, gleam@json:string(Expected)},
                {<<"actual"/utf8>>, gleam@json:string(Actual)}];

        {some, {boolean_failure, Actual@1, Expected@1}} ->
            [{<<"expected"/utf8>>, gleam@json:bool(Expected@1)},
                {<<"actual"/utf8>>, gleam@json:bool(Actual@1)}];

        {some, {option_failure, Actual@2, Expected_some}} ->
            [{<<"expected_some"/utf8>>, gleam@json:bool(Expected_some)},
                {<<"actual"/utf8>>, gleam@json:string(Actual@2)}];

        {some, {result_failure, Actual@3, Expected_ok}} ->
            [{<<"expected_ok"/utf8>>, gleam@json:bool(Expected_ok)},
                {<<"actual"/utf8>>, gleam@json:string(Actual@3)}];

        {some, {collection_failure, Actual@4, Expected@2, Operation}} ->
            [{<<"expected"/utf8>>, gleam@json:string(Expected@2)},
                {<<"actual"/utf8>>, gleam@json:string(Actual@4)},
                {<<"operation"/utf8>>, gleam@json:string(Operation)}];

        {some, {comparison_failure, Actual@5, Expected@3, Operator}} ->
            [{<<"expected"/utf8>>, gleam@json:string(Expected@3)},
                {<<"actual"/utf8>>, gleam@json:string(Actual@5)},
                {<<"comparison_operator"/utf8>>, gleam@json:string(Operator)}];

        {some, {string_match_failure, Actual@6, Pattern, Operation@1}} ->
            [{<<"pattern"/utf8>>, gleam@json:string(Pattern)},
                {<<"actual"/utf8>>, gleam@json:string(Actual@6)},
                {<<"operation"/utf8>>, gleam@json:string(Operation@1)}];

        {some, {custom_matcher_failure, Actual@7, Description}} ->
            [{<<"actual"/utf8>>, gleam@json:string(Actual@7)},
                {<<"description"/utf8>>, gleam@json:string(Description)}]
    end.

-file("src/dream_test/reporter/json.gleam", 223).
-spec build_failure_json(dream_test@types:assertion_failure()) -> gleam@json:json().
build_failure_json(Failure) ->
    Base_fields = [{<<"operator"/utf8>>,
            gleam@json:string(erlang:element(2, Failure))},
        {<<"message"/utf8>>, gleam@json:string(erlang:element(3, Failure))}],
    Payload_fields = build_payload_fields(erlang:element(4, Failure)),
    gleam@json:object(lists:append(Base_fields, Payload_fields)).

-file("src/dream_test/reporter/json.gleam", 280).
-spec status_to_string(dream_test@types:status()) -> binary().
status_to_string(Status) ->
    case Status of
        passed ->
            <<"passed"/utf8>>;

        failed ->
            <<"failed"/utf8>>;

        skipped ->
            <<"skipped"/utf8>>;

        pending ->
            <<"pending"/utf8>>;

        timed_out ->
            <<"timed_out"/utf8>>;

        setup_failed ->
            <<"setup_failed"/utf8>>
    end.

-file("src/dream_test/reporter/json.gleam", 291).
-spec kind_to_string(dream_test@types:test_kind()) -> binary().
kind_to_string(Kind) ->
    case Kind of
        unit ->
            <<"unit"/utf8>>;

        integration ->
            <<"integration"/utf8>>;

        {gherkin_scenario, Id} ->
            <<"gherkin:"/utf8, Id/binary>>
    end.

-file("src/dream_test/reporter/json.gleam", 211).
-spec build_test_json(dream_test@types:test_result()) -> gleam@json:json().
build_test_json(Result) ->
    gleam@json:object(
        [{<<"name"/utf8>>, gleam@json:string(erlang:element(2, Result))},
            {<<"full_name"/utf8>>,
                gleam@json:array(
                    erlang:element(3, Result),
                    fun gleam@json:string/1
                )},
            {<<"status"/utf8>>,
                gleam@json:string(status_to_string(erlang:element(4, Result)))},
            {<<"duration_ms"/utf8>>, gleam@json:int(erlang:element(5, Result))},
            {<<"tags"/utf8>>,
                gleam@json:array(
                    erlang:element(6, Result),
                    fun gleam@json:string/1
                )},
            {<<"kind"/utf8>>,
                gleam@json:string(kind_to_string(erlang:element(8, Result)))},
            {<<"failures"/utf8>>,
                gleam@json:array(
                    erlang:element(7, Result),
                    fun build_failure_json/1
                )}]
    ).

-file("src/dream_test/reporter/json.gleam", 299).
-spec count_by_status(
    list(dream_test@types:test_result()),
    dream_test@types:status()
) -> integer().
count_by_status(Results, Wanted) ->
    gleam@list:fold(
        Results,
        0,
        fun(Count, Result) -> case erlang:element(4, Result) =:= Wanted of
                true ->
                    Count + 1;

                false ->
                    Count
            end end
    ).

-file("src/dream_test/reporter/json.gleam", 191).
-spec build_summary_json(list(dream_test@types:test_result())) -> gleam@json:json().
build_summary_json(Results) ->
    Total = erlang:length(Results),
    Passed = count_by_status(Results, passed),
    Failed = count_by_status(Results, failed),
    Skipped = count_by_status(Results, skipped),
    Pending = count_by_status(Results, pending),
    Timed_out = count_by_status(Results, timed_out),
    Setup_failed = count_by_status(Results, setup_failed),
    gleam@json:object(
        [{<<"total"/utf8>>, gleam@json:int(Total)},
            {<<"passed"/utf8>>, gleam@json:int(Passed)},
            {<<"failed"/utf8>>, gleam@json:int(Failed)},
            {<<"skipped"/utf8>>, gleam@json:int(Skipped)},
            {<<"pending"/utf8>>, gleam@json:int(Pending)},
            {<<"timed_out"/utf8>>, gleam@json:int(Timed_out)},
            {<<"setup_failed"/utf8>>, gleam@json:int(Setup_failed)}]
    ).

-file("src/dream_test/reporter/json.gleam", 308).
-spec calculate_total_duration(list(dream_test@types:test_result())) -> integer().
calculate_total_duration(Results) ->
    gleam@list:fold(
        Results,
        0,
        fun(Total, Result) -> Total + erlang:element(5, Result) end
    ).

-file("src/dream_test/reporter/json.gleam", 377).
-spec spaces(integer()) -> binary().
spaces(Count) ->
    gleam@string:repeat(<<" "/utf8>>, Count).

-file("src/dream_test/reporter/json.gleam", 320).
-spec prettify_chars(list(binary()), integer(), boolean(), binary()) -> binary().
prettify_chars(Chars, Indent, In_string, Acc) ->
    case Chars of
        [] ->
            Acc;

        [<<"\\"/utf8>>, Escaped | Rest] when In_string ->
            prettify_chars(
                Rest,
                Indent,
                true,
                <<<<Acc/binary, "\\"/utf8>>/binary, Escaped/binary>>
            );

        [<<"\""/utf8>> | Rest@1] ->
            prettify_chars(
                Rest@1,
                Indent,
                not In_string,
                <<Acc/binary, "\""/utf8>>
            );

        [Char | Rest@2] when In_string ->
            prettify_chars(Rest@2, Indent, true, <<Acc/binary, Char/binary>>);

        [<<"{"/utf8>> | Rest@3] ->
            New_indent = Indent + 2,
            prettify_chars(
                Rest@3,
                New_indent,
                false,
                <<<<Acc/binary, "{\n"/utf8>>/binary,
                    (spaces(New_indent))/binary>>
            );

        [<<"}"/utf8>> | Rest@4] ->
            New_indent@1 = Indent - 2,
            prettify_chars(
                Rest@4,
                New_indent@1,
                false,
                <<<<<<Acc/binary, "\n"/utf8>>/binary,
                        (spaces(New_indent@1))/binary>>/binary,
                    "}"/utf8>>
            );

        [<<"["/utf8>> | Rest@5] ->
            New_indent@2 = Indent + 2,
            prettify_chars(
                Rest@5,
                New_indent@2,
                false,
                <<<<Acc/binary, "[\n"/utf8>>/binary,
                    (spaces(New_indent@2))/binary>>
            );

        [<<"]"/utf8>> | Rest@6] ->
            New_indent@3 = Indent - 2,
            prettify_chars(
                Rest@6,
                New_indent@3,
                false,
                <<<<<<Acc/binary, "\n"/utf8>>/binary,
                        (spaces(New_indent@3))/binary>>/binary,
                    "]"/utf8>>
            );

        [<<","/utf8>> | Rest@7] ->
            prettify_chars(
                Rest@7,
                Indent,
                false,
                <<<<Acc/binary, ",\n"/utf8>>/binary, (spaces(Indent))/binary>>
            );

        [<<":"/utf8>> | Rest@8] ->
            prettify_chars(Rest@8, Indent, false, <<Acc/binary, ": "/utf8>>);

        [<<" "/utf8>> | Rest@9] ->
            prettify_chars(Rest@9, Indent, false, Acc);

        [Char@1 | Rest@10] ->
            prettify_chars(
                Rest@10,
                Indent,
                false,
                <<Acc/binary, Char@1/binary>>
            )
    end.

-file("src/dream_test/reporter/json.gleam", 316).
-spec prettify_json(binary()) -> binary().
prettify_json(Input) ->
    prettify_chars(gleam@string:to_graphemes(Input), 0, false, <<""/utf8>>).

-file("src/dream_test/reporter/json.gleam", 183).
-spec build_system_json() -> gleam@json:json().
build_system_json() ->
    gleam@json:object(
        [{<<"os"/utf8>>,
                gleam@json:string(dream_test_reporter_json_ffi:get_os())},
            {<<"otp_version"/utf8>>,
                gleam@json:string(
                    dream_test_reporter_json_ffi:get_otp_version()
                )},
            {<<"gleam_version"/utf8>>,
                gleam@json:string(
                    dream_test_reporter_json_ffi:get_gleam_version()
                )}]
    ).

-file("src/dream_test/reporter/json.gleam", 170).
-spec build_report_json(list(dream_test@types:test_result())) -> gleam@json:json().
build_report_json(Results) ->
    Total_duration = calculate_total_duration(Results),
    gleam@json:object(
        [{<<"version"/utf8>>, gleam@json:string(<<"1.0"/utf8>>)},
            {<<"timestamp_ms"/utf8>>,
                gleam@json:int(dream_test_reporter_json_ffi:get_timestamp_ms())},
            {<<"duration_ms"/utf8>>, gleam@json:int(Total_duration)},
            {<<"system"/utf8>>, build_system_json()},
            {<<"summary"/utf8>>, build_summary_json(Results)},
            {<<"tests"/utf8>>, gleam@json:array(Results, fun build_test_json/1)}]
    ).

-file("src/dream_test/reporter/json.gleam", 91).
?DOC(
    " Format test results as a compact JSON string.\n"
    "\n"
    " Returns a single-line JSON string suitable for machine parsing.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " let json_string = format(results)\n"
    " file.write(\"test-results.json\", json_string)\n"
    " ```\n"
).
-spec format(list(dream_test@types:test_result())) -> binary().
format(Results) ->
    _pipe = build_report_json(Results),
    gleam@json:to_string(_pipe).

-file("src/dream_test/reporter/json.gleam", 107).
?DOC(
    " Format test results as pretty-printed JSON.\n"
    "\n"
    " Returns an indented, human-readable JSON string with 2-space indentation.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " let json_string = format_pretty(results)\n"
    " io.println(json_string)\n"
    " ```\n"
).
-spec format_pretty(list(dream_test@types:test_result())) -> binary().
format_pretty(Results) ->
    _pipe = build_report_json(Results),
    _pipe@1 = gleam@json:to_string(_pipe),
    prettify_json(_pipe@1).

-file("src/dream_test/reporter/json.gleam", 140).
?DOC(
    " Print test results as JSON using a provided writer function.\n"
    "\n"
    " This is the main entry point for JSON reporting. The writer function\n"
    " receives the JSON string and can print it, log it, or write it to a file.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " // Print to stdout\n"
    " results |> json.report(io.print)\n"
    "\n"
    " // Write to file\n"
    " results |> json.report(fn(s) { file.write(\"results.json\", s) })\n"
    " ```\n"
    "\n"
    " ## Returns\n"
    "\n"
    " Returns the input results unchanged, enabling pipeline composition:\n"
    "\n"
    " ```gleam\n"
    " to_test_cases(\"my_test\", tests())\n"
    " |> run_all()\n"
    " |> bdd.report(io.print)\n"
    " |> json.report(write_to_file)\n"
    " |> exit_on_failure()\n"
    " ```\n"
).
-spec report(list(dream_test@types:test_result()), fun((binary()) -> nil)) -> list(dream_test@types:test_result()).
report(Results, Write) ->
    Write(format(Results)),
    Results.

-file("src/dream_test/reporter/json.gleam", 158).
?DOC(
    " Print test results as pretty-printed JSON using a provided writer function.\n"
    "\n"
    " Same as `report` but with indented, human-readable output.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " results |> json.report_pretty(io.print)\n"
    " ```\n"
).
-spec report_pretty(
    list(dream_test@types:test_result()),
    fun((binary()) -> nil)
) -> list(dream_test@types:test_result()).
report_pretty(Results, Write) ->
    Write(format_pretty(Results)),
    Results.