-module(gilly@error).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/gilly/error.gleam").
-export([describe_error/1]).
-export_type([error/0]).

-type error() :: {unsupported_file_type, binary(), list(binary())} |
    {reading_file, binary(), simplifile:file_error()} |
    {parsing_open_a_p_i, binary(), gilly@openapi@error:error()}.

-file("src/gilly/error.gleam", 24).
-spec describe_error(error()) -> binary().
describe_error(Error) ->
    case Error of
        {unsupported_file_type, Source, Supported} ->
            <<<<<<"Unsupported file type for '"/utf8, Source/binary>>/binary,
                    "'. Supported file types are: "/utf8>>/binary,
                (gleam@string:join(Supported, <<", "/utf8>>))/binary>>;

        {reading_file, Source@1, Inner} ->
            <<<<<<"Failed to read file '"/utf8, Source@1/binary>>/binary,
                    "': "/utf8>>/binary,
                (simplifile:describe_error(Inner))/binary>>;

        {parsing_open_a_p_i, Source@2, Inner@1} ->
            <<<<<<"Failed to parse OpenAPI specification from file '"/utf8,
                        Source@2/binary>>/binary,
                    "': "/utf8>>/binary,
                (gilly@openapi@error:describe_error(Inner@1))/binary>>
    end.