-module(yodel@errors).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/yodel/errors.gleam").
-export([format_config_error/1]).
-export_type([config_error/0, file_error/0, parse_error/0, syntax_error/0, location/0, resolver_error/0, validation_error/0, properties_error/0, type_error/0]).

-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(
    " Error types returned when loading, parsing, or accessing configuration.\n"
    "\n"
    " **Note:** These types are re-exported from the main `yodel` module.\n"
    " Import them via `import yodel` rather than importing this module directly.\n"
).

-type config_error() :: {file_error, file_error()} |
    {parse_error, parse_error()} |
    {resolver_error, resolver_error()} |
    {validation_error, validation_error()}.

-type file_error() :: {file_not_found, binary()} |
    {file_permission_denied, binary()} |
    {file_read_error, binary()} |
    {not_a_file, binary()}.

-type parse_error() :: {invalid_syntax, syntax_error()} |
    {invalid_structure, binary()} |
    unknown_format.

-type syntax_error() :: {syntax_error, binary(), location(), binary()}.

-type location() :: {location, integer(), integer()}.

-type resolver_error() :: {unresolved_placeholder, binary(), binary()} |
    {regex_error, binary()} |
    no_placeholder_found.

-type validation_error() :: empty_config | {invalid_config, binary()}.

-type properties_error() :: {path_not_found, binary()} |
    {type_error, binary(), type_error()}.

-type type_error() :: {expected_string, yodel@value:value()} |
    {expected_int, yodel@value:value()} |
    {expected_float, yodel@value:value()} |
    {expected_bool, yodel@value:value()}.

-file("src/yodel/errors.gleam", 82).
-spec format_file_error(file_error()) -> binary().
format_file_error(Error) ->
    case Error of
        {file_not_found, Path} ->
            <<"File not found: "/utf8, Path/binary>>;

        {file_permission_denied, Path@1} ->
            <<"Permission denied: "/utf8, Path@1/binary>>;

        {file_read_error, Details} ->
            <<"Error reading file: "/utf8, Details/binary>>;

        {not_a_file, Path@2} ->
            <<"Not a file: "/utf8, Path@2/binary>>
    end.

-file("src/yodel/errors.gleam", 99).
-spec format_syntax_error(syntax_error()) -> binary().
format_syntax_error(Error) ->
    {syntax_error, Format, Location, Message} = Error,
    {location, Line, Column} = Location,
    <<<<<<<<<<<<<<"Syntax error in "/utf8, Format/binary>>/binary,
                            " at line "/utf8>>/binary,
                        (erlang:integer_to_binary(Line))/binary>>/binary,
                    ", column "/utf8>>/binary,
                (erlang:integer_to_binary(Column))/binary>>/binary,
            ": "/utf8>>/binary,
        Message/binary>>.

-file("src/yodel/errors.gleam", 91).
-spec format_parse_error(parse_error()) -> binary().
format_parse_error(Error) ->
    case Error of
        {invalid_syntax, Error@1} ->
            format_syntax_error(Error@1);

        {invalid_structure, Details} ->
            Details;

        unknown_format ->
            <<"Unable to determine config format"/utf8>>
    end.

-file("src/yodel/errors.gleam", 112).
-spec format_resolve_error(resolver_error()) -> binary().
format_resolve_error(Error) ->
    case Error of
        {unresolved_placeholder, Placeholder, Value} ->
            <<<<<<<<"Could not resolve placeholder '"/utf8, Placeholder/binary>>/binary,
                        "' in value \""/utf8>>/binary,
                    Value/binary>>/binary,
                "\""/utf8>>;

        {regex_error, Details} ->
            <<"Regex error: "/utf8, Details/binary>>;

        no_placeholder_found ->
            <<"No placeholder found"/utf8>>
    end.

-file("src/yodel/errors.gleam", 125).
-spec format_validation_error(validation_error()) -> binary().
format_validation_error(Error) ->
    case Error of
        empty_config ->
            <<"Empty config"/utf8>>;

        {invalid_config, Details} ->
            <<"Invalid config: "/utf8, Details/binary>>
    end.

-file("src/yodel/errors.gleam", 72).
?DOC(" Format a `ConfigError` into a human-readable string.\n").
-spec format_config_error(config_error()) -> binary().
format_config_error(Error) ->
    case Error of
        {file_error, File_error} ->
            format_file_error(File_error);

        {parse_error, Parse_error} ->
            format_parse_error(Parse_error);

        {resolver_error, Resolve_error} ->
            format_resolve_error(Resolve_error);

        {validation_error, Validation_error} ->
            format_validation_error(Validation_error)
    end.