-module(dream_test@reporters@gherkin).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/dream_test/reporters/gherkin.gleam").
-export([format/1, report/2, is_gherkin_result/1]).

-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(
    " Gherkin-style report formatting.\n"
    "\n"
    " This module formats `TestResult` values with kind `GherkinScenario(_ )` in a\n"
    " Cucumber-like layout (Feature → Scenario), so you can print or persist a\n"
    " human-readable report for BDD runs.\n"
    "\n"
    " Most users won’t call this module directly—`dream_test/reporters` wires it\n"
    " in automatically—but it’s useful when you want:\n"
    "\n"
    " - a Gherkin report as a `String` (`format`)\n"
    " - to write the report using a custom function (`report`)\n"
).

-file("src/dream_test/reporters/gherkin.gleam", 294).
-spec format_summary_parts(list(binary())) -> binary().
format_summary_parts(Parts) ->
    case Parts of
        [] ->
            <<""/utf8>>;

        _ ->
            erlang:list_to_binary(
                [<<", "/utf8>>, gleam@string:join(Parts, <<", "/utf8>>)]
            )
    end.

-file("src/dream_test/reporters/gherkin.gleam", 301).
-spec add_summary_part_if_nonzero(list(binary()), integer(), binary()) -> list(binary()).
add_summary_part_if_nonzero(Parts, Count, Label) ->
    case Count of
        0 ->
            Parts;

        _ ->
            [erlang:list_to_binary([erlang:integer_to_binary(Count), Label]) |
                Parts]
    end.

-file("src/dream_test/reporters/gherkin.gleam", 278).
-spec build_summary_suffix(integer(), integer(), integer(), integer()) -> binary().
build_summary_suffix(Skipped, Pending, Timed_out, Setup_failed) ->
    Parts = begin
        _pipe = [],
        _pipe@1 = add_summary_part_if_nonzero(
            _pipe,
            Skipped,
            <<" skipped"/utf8>>
        ),
        _pipe@2 = add_summary_part_if_nonzero(
            _pipe@1,
            Pending,
            <<" pending"/utf8>>
        ),
        _pipe@3 = add_summary_part_if_nonzero(
            _pipe@2,
            Timed_out,
            <<" timed out"/utf8>>
        ),
        add_summary_part_if_nonzero(
            _pipe@3,
            Setup_failed,
            <<" setup failed"/utf8>>
        )
    end,
    format_summary_parts(Parts).

-file("src/dream_test/reporters/gherkin.gleam", 271).
-spec sum_durations(list(dream_test@types:test_result()), integer()) -> integer().
sum_durations(Results, Total) ->
    case Results of
        [] ->
            Total;

        [Result | Rest] ->
            sum_durations(Rest, Total + erlang:element(5, Result))
    end.

-file("src/dream_test/reporters/gherkin.gleam", 330).
-spec increment_if_matches(
    dream_test@types:status(),
    dream_test@types:status(),
    integer()
) -> integer().
increment_if_matches(Status, Wanted, Count) ->
    case Status =:= Wanted of
        true ->
            Count + 1;

        false ->
            Count
    end.

-file("src/dream_test/reporters/gherkin.gleam", 316).
-spec count_matching_status(
    list(dream_test@types:test_result()),
    dream_test@types:status(),
    integer()
) -> integer().
count_matching_status(Results, Wanted, Count) ->
    case Results of
        [] ->
            Count;

        [Result | Rest] ->
            Next_count = increment_if_matches(
                erlang:element(4, Result),
                Wanted,
                Count
            ),
            count_matching_status(Rest, Wanted, Next_count)
    end.

-file("src/dream_test/reporters/gherkin.gleam", 312).
-spec count_by_status(
    list(dream_test@types:test_result()),
    dream_test@types:status()
) -> integer().
count_by_status(Results, Wanted) ->
    count_matching_status(Results, Wanted, 0).

-file("src/dream_test/reporters/gherkin.gleam", 246).
-spec format_summary(list(dream_test@types:test_result())) -> binary().
format_summary(Results) ->
    Total = erlang:length(Results),
    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),
    Passed = ((((Total - Failed) - Skipped) - Pending) - Timed_out) - Setup_failed,
    Total_duration = sum_durations(Results, 0),
    erlang:list_to_binary(
        [<<"Summary: "/utf8>>,
            erlang:integer_to_binary(Total),
            <<" run, "/utf8>>,
            erlang:integer_to_binary(Failed),
            <<" failed, "/utf8>>,
            erlang:integer_to_binary(Passed),
            <<" passed"/utf8>>,
            build_summary_suffix(Skipped, Pending, Timed_out, Setup_failed),
            <<" in "/utf8>>,
            dream_test@timing:format_duration_ms(Total_duration),
            <<"\n"/utf8>>]
    ).

-file("src/dream_test/reporters/gherkin.gleam", 225).
-spec format_failure_payload(
    gleam@option:option(dream_test@types:failure_payload())
) -> binary().
format_failure_payload(Payload) ->
    case Payload of
        {some, {equality_failure, Actual, Expected}} ->
            erlang:list_to_binary(
                [<<"        Expected: "/utf8>>,
                    Expected,
                    <<"\n"/utf8>>,
                    <<"        Actual:   "/utf8>>,
                    Actual,
                    <<"\n"/utf8>>]
            );

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

-file("src/dream_test/reporters/gherkin.gleam", 218).
-spec format_failure_message(binary()) -> binary().
format_failure_message(Message) ->
    case Message of
        <<""/utf8>> ->
            <<""/utf8>>;

        _ ->
            erlang:list_to_binary(
                [<<"        Message: "/utf8>>, Message, <<"\n"/utf8>>]
            )
    end.

-file("src/dream_test/reporters/gherkin.gleam", 211).
-spec format_one_failure(dream_test@types:assertion_failure()) -> binary().
format_one_failure(Failure) ->
    Header = erlang:list_to_binary(
        [<<"      ✗ "/utf8>>, erlang:element(2, Failure), <<"\n"/utf8>>]
    ),
    Message_text = format_failure_message(erlang:element(3, Failure)),
    Payload_text = format_failure_payload(erlang:element(4, Failure)),
    erlang:list_to_binary([Header, Message_text, Payload_text]).

-file("src/dream_test/reporters/gherkin.gleam", 197).
-spec format_all_failures(list(dream_test@types:assertion_failure()), binary()) -> binary().
format_all_failures(Failures, Accumulated) ->
    case Failures of
        [] ->
            Accumulated;

        [Failure | Rest] ->
            Formatted = format_one_failure(Failure),
            Updated = erlang:list_to_binary([Accumulated, Formatted]),
            format_all_failures(Rest, Updated)
    end.

-file("src/dream_test/reporters/gherkin.gleam", 189).
-spec format_failure_details(dream_test@types:test_result()) -> binary().
format_failure_details(Result) ->
    case erlang:element(4, Result) of
        failed ->
            format_all_failures(erlang:element(7, Result), <<""/utf8>>);

        setup_failed ->
            format_all_failures(erlang:element(7, Result), <<""/utf8>>);

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

-file("src/dream_test/reporters/gherkin.gleam", 159).
-spec format_duration(integer()) -> binary().
format_duration(Duration_ms) ->
    case Duration_ms of
        Ms when Ms =< 0 ->
            <<""/utf8>>;

        Ms@1 ->
            <<<<" ("/utf8, (dream_test@timing:format_duration_ms(Ms@1))/binary>>/binary,
                ")"/utf8>>
    end.

-file("src/dream_test/reporters/gherkin.gleam", 174).
-spec status_marker(dream_test@types:status()) -> binary().
status_marker(Status) ->
    case Status of
        passed ->
            <<"✓"/utf8>>;

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

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

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

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

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

-file("src/dream_test/reporters/gherkin.gleam", 167).
-spec extract_scenario_name(list(binary())) -> binary().
extract_scenario_name(Full_name) ->
    case lists:reverse(Full_name) of
        [] ->
            <<"Unknown Scenario"/utf8>>;

        [Name | _] ->
            Name
    end.

-file("src/dream_test/reporters/gherkin.gleam", 149).
-spec format_scenario(dream_test@types:test_result()) -> binary().
format_scenario(Result) ->
    Scenario_name = extract_scenario_name(erlang:element(3, Result)),
    Marker = status_marker(erlang:element(4, Result)),
    Duration = format_duration(erlang:element(5, Result)),
    Scenario_line = erlang:list_to_binary(
        [<<"  Scenario: "/utf8>>,
            Scenario_name,
            <<" "/utf8>>,
            Marker,
            Duration,
            <<"\n"/utf8>>]
    ),
    Failure_text = format_failure_details(Result),
    erlang:list_to_binary([Scenario_line, Failure_text]).

-file("src/dream_test/reporters/gherkin.gleam", 142).
-spec format_feature_header_if_new(binary(), binary()) -> binary().
format_feature_header_if_new(Current, Previous) ->
    case Current =:= Previous of
        true ->
            <<""/utf8>>;

        false ->
            erlang:list_to_binary(
                [<<"Feature: "/utf8>>, Current, <<"\n"/utf8>>]
            )
    end.

-file("src/dream_test/reporters/gherkin.gleam", 135).
-spec extract_feature_name(list(binary())) -> binary().
extract_feature_name(Full_name) ->
    case Full_name of
        [] ->
            <<"Unknown Feature"/utf8>>;

        [Feature | _] ->
            Feature
    end.

-file("src/dream_test/reporters/gherkin.gleam", 117).
-spec format_all_results(
    list(dream_test@types:test_result()),
    binary(),
    binary()
) -> binary().
format_all_results(Results, Previous_feature, Accumulated) ->
    case Results of
        [] ->
            Accumulated;

        [Result | Rest] ->
            Feature_name = extract_feature_name(erlang:element(3, Result)),
            Feature_header = format_feature_header_if_new(
                Feature_name,
                Previous_feature
            ),
            Scenario_text = format_scenario(Result),
            Updated = erlang:list_to_binary(
                [Accumulated, Feature_header, Scenario_text]
            ),
            format_all_results(Rest, Feature_name, Updated)
    end.

-file("src/dream_test/reporters/gherkin.gleam", 52).
?DOC(
    " Format test results as a Gherkin-style report string.\n"
    "\n"
    " Returns the complete report including:\n"
    " - Feature name as header\n"
    " - Scenario names with status markers\n"
    " - Summary with scenario counts\n"
    "\n"
    " Use this when you need the report as a string.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " gherkin_reporter.format(sample_results())\n"
    " |> should\n"
    " |> match_snapshot(\"./test/snapshots/gherkin_format_report.snap\")\n"
    " |> or_fail_with(\"expected formatted report snapshot match\")\n"
    " ```\n"
    "\n"
    " ## Parameters\n"
    "\n"
    " - `results`: The test results to format\n"
    "\n"
    " ## Returns\n"
    "\n"
    " The formatted report as a `String`.\n"
).
-spec format(list(dream_test@types:test_result())) -> binary().
format(Results) ->
    Formatted_results = format_all_results(Results, <<""/utf8>>, <<""/utf8>>),
    Summary_text = format_summary(Results),
    erlang:list_to_binary([Formatted_results, <<"\n"/utf8>>, Summary_text]).

-file("src/dream_test/reporters/gherkin.gleam", 78).
?DOC(
    " Print test results using a provided writer function.\n"
    "\n"
    " This is the main entry point for Gherkin test runs.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " let results = runner.new([tests()]) |> runner.run()\n"
    " gherkin_reporter.report(results, io.print)\n"
    " ```\n"
    "\n"
    " ## Parameters\n"
    "\n"
    " - `results`: List of test results from the runner\n"
    " - `write`: Function that handles the formatted output string\n"
    "\n"
    " ## Returns\n"
    "\n"
    " Returns the input results unchanged, enabling pipeline composition.\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/reporters/gherkin.gleam", 106).
?DOC(
    " Check if a TestResult is from a Gherkin test.\n"
    "\n"
    " Useful for filtering or routing results to the appropriate reporter.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " gherkin_reporter.is_gherkin_result(gherkin_result())\n"
    " |> should\n"
    " |> be_equal(True)\n"
    " |> or_fail_with(\"expected True for gherkin results\")\n"
    " ```\n"
    "\n"
    " ## Parameters\n"
    "\n"
    " - `result`: A single `TestResult` to inspect\n"
    "\n"
    " ## Returns\n"
    "\n"
    " `True` when `result.kind` is `GherkinScenario(_)`, otherwise `False`.\n"
).
-spec is_gherkin_result(dream_test@types:test_result()) -> boolean().
is_gherkin_result(Result) ->
    case erlang:element(8, Result) of
        {gherkin_scenario, _} ->
            true;

        _ ->
            false
    end.