.editorconfig

# Top-most EditorConfig file
root = true

# ─── Universal ───────────────────────────────────────────────────────────────
[*]
indent_style = space
indent_size = 4
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

# ─── Solution / project files ────────────────────────────────────────────────
[*.{sln,csproj,props,targets}]
indent_size = 2

# ─── JSON / YAML / XML config ────────────────────────────────────────────────
[*.{json,yml,yaml,xml,config,runsettings,}]
indent_size = 2

# ─── Markdown ────────────────────────────────────────────────────────────────
[*.md]
trim_trailing_whitespace = false

# ─── C# ──────────────────────────────────────────────────────────────────────
[*.cs]

# --- Formatting: indentation & spacing ---------------------------------------
csharp_indent_case_contents = true
csharp_indent_switch_labels = true
csharp_space_after_cast = false
csharp_space_after_keywords_in_control_flow_statements = true
csharp_space_between_method_declaration_parameter_list_parentheses = false
csharp_space_between_method_call_parameter_list_parentheses = false
csharp_space_before_colon_in_inheritance_clause = true
csharp_space_after_colon_in_inheritance_clause = true

# --- Formatting: new lines ---------------------------------------------------
csharp_new_line_before_open_brace = all
csharp_new_line_before_else = true
csharp_new_line_before_catch = true
csharp_new_line_before_finally = true
csharp_new_line_before_members_in_object_initializers = true
csharp_new_line_before_members_in_anonymous_types = true
csharp_new_line_between_query_expression_clauses = true

# --- Formatting: wrapping ----------------------------------------------------
csharp_preserve_single_line_statements = false
csharp_preserve_single_line_blocks = true

# --- Language rules: this. qualification -------------------------------------
dotnet_style_qualification_for_field = false:warning
dotnet_style_qualification_for_property = false:warning
dotnet_style_qualification_for_method = false:warning
dotnet_style_qualification_for_event = false:warning

# --- Language rules: built-in type aliases -----------------------------------
dotnet_style_predefined_type_for_locals_parameters_members = true:warning
dotnet_style_predefined_type_for_member_access = true:warning

# --- Language rules: var usage -----------------------------------------------
csharp_style_var_for_built_in_types = false:warning
csharp_style_var_when_type_is_apparent = true:suggestion
csharp_style_var_elsewhere = false:suggestion

# --- Language rules: expression-bodied members -------------------------------
csharp_style_expression_bodied_methods = when_on_single_line:suggestion
csharp_style_expression_bodied_constructors = false:warning
csharp_style_expression_bodied_operators = when_on_single_line:suggestion
csharp_style_expression_bodied_properties = true:suggestion
csharp_style_expression_bodied_indexers = true:suggestion
csharp_style_expression_bodied_accessors = true:suggestion
csharp_style_expression_bodied_lambdas = true:suggestion
csharp_style_expression_bodied_local_functions = when_on_single_line:suggestion

# --- Language rules: pattern matching ----------------------------------------
csharp_style_pattern_matching_over_is_with_cast_check = true:warning
csharp_style_pattern_matching_over_as_with_null_check = true:warning
csharp_style_prefer_switch_expression = true:suggestion
csharp_style_prefer_pattern_matching = true:suggestion
csharp_style_prefer_not_pattern = true:suggestion
csharp_style_prefer_extended_property_pattern = true:suggestion

# --- Language rules: null checking -------------------------------------------
csharp_style_prefer_null_coalescing_assignment = true:warning
dotnet_style_null_propagation = true:warning
dotnet_style_prefer_is_null_check_for_reference_equality_checks = true:warning
csharp_style_throw_expression = true:suggestion
csharp_style_conditional_delegate_call = true:warning

# --- Language rules: modern C# features --------------------------------------
csharp_style_prefer_primary_constructors = true:suggestion
csharp_style_prefer_collection_expressions = true:suggestion
csharp_prefer_simple_default_expression = true:warning
csharp_style_prefer_local_over_anonymous_function = true:suggestion
csharp_style_prefer_index_operator = true:suggestion
csharp_style_prefer_range_operator = true:suggestion
csharp_style_implicit_object_creation_when_type_is_apparent = true:suggestion
csharp_style_prefer_tuple_swap = true:suggestion
csharp_style_prefer_utf8_string_literals = true:suggestion

# --- Language rules: using directives ----------------------------------------
csharp_using_directive_placement = outside_namespace:warning
dotnet_sort_system_directives_first = true
dotnet_separate_import_directive_groups = false

# --- Language rules: namespace style -----------------------------------------
csharp_style_namespace_declarations = file_scoped:warning

# --- Language rules: modifiers -----------------------------------------------
dotnet_style_require_accessibility_modifiers = for_non_interface_members:warning
csharp_prefer_static_local_function = true:suggestion
dotnet_style_readonly_field = true:warning
csharp_style_prefer_readonly_struct = true:suggestion
csharp_style_prefer_readonly_struct_member = true:suggestion

# --- Language rules: code block preferences ----------------------------------
csharp_prefer_braces = true:warning
csharp_prefer_simple_using_statement = true:suggestion
csharp_style_prefer_method_group_conversion = true:suggestion
csharp_style_prefer_top_level_statements = true:suggestion

# --- Dotnet style: object/collection initializers ----------------------------
dotnet_style_object_initializer = true:suggestion
dotnet_style_collection_initializer = true:suggestion
dotnet_style_prefer_collection_expression = true:suggestion
dotnet_style_explicit_tuple_names = true:warning
dotnet_style_prefer_inferred_tuple_names = true:suggestion
dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
dotnet_style_prefer_auto_properties = true:suggestion
dotnet_style_prefer_conditional_expression_over_assignment = true:suggestion
dotnet_style_prefer_conditional_expression_over_return = true:suggestion
dotnet_style_prefer_compound_assignment = true:warning
dotnet_style_prefer_simplified_interpolation = true:suggestion
dotnet_style_prefer_simplified_boolean_expressions = true:warning
dotnet_style_operator_placement_when_wrapping = beginning_of_line

# --- Naming conventions ------------------------------------------------------
# Interfaces: IPascalCase
dotnet_naming_rule.interface_should_be_prefixed_with_i.severity = warning
dotnet_naming_rule.interface_should_be_prefixed_with_i.symbols = interface
dotnet_naming_rule.interface_should_be_prefixed_with_i.style = prefix_i_style

dotnet_naming_symbols.interface.applicable_kinds = interface
dotnet_naming_symbols.interface.applicable_accessibilities = public, internal

dotnet_naming_style.prefix_i_style.required_prefix = I
dotnet_naming_style.prefix_i_style.capitalization = pascal_case

# Type parameters: TPascalCase
dotnet_naming_rule.type_parameters_should_be_prefixed_with_t.severity = warning
dotnet_naming_rule.type_parameters_should_be_prefixed_with_t.symbols = type_parameter
dotnet_naming_rule.type_parameters_should_be_prefixed_with_t.style = prefix_t_style

dotnet_naming_symbols.type_parameter.applicable_kinds = type_parameter
dotnet_naming_style.prefix_t_style.required_prefix = T
dotnet_naming_style.prefix_t_style.capitalization = pascal_case

# Private fields: _camelCase
dotnet_naming_rule.private_fields_should_be_camel_case.severity = warning
dotnet_naming_rule.private_fields_should_be_camel_case.symbols = private_fields
dotnet_naming_rule.private_fields_should_be_camel_case.style = underscore_camel_case_style

dotnet_naming_symbols.private_fields.applicable_kinds = field
dotnet_naming_symbols.private_fields.applicable_accessibilities = private, protected

dotnet_naming_style.underscore_camel_case_style.required_prefix = _
dotnet_naming_style.underscore_camel_case_style.capitalization = camel_case

# Async methods: PascalCaseAsync
dotnet_naming_rule.async_methods_end_in_async.severity = warning
dotnet_naming_rule.async_methods_end_in_async.symbols = async_methods
dotnet_naming_rule.async_methods_end_in_async.style = end_in_async_style

dotnet_naming_symbols.async_methods.applicable_kinds = method
dotnet_naming_symbols.async_methods.required_modifiers = async

dotnet_naming_style.end_in_async_style.required_suffix = Async
dotnet_naming_style.end_in_async_style.capitalization = pascal_case

# Constants: PascalCase
dotnet_naming_rule.constants_should_be_pascal_case.severity = warning
dotnet_naming_rule.constants_should_be_pascal_case.symbols = constants
dotnet_naming_rule.constants_should_be_pascal_case.style = pascal_case_style

dotnet_naming_symbols.constants.applicable_kinds = field, local
dotnet_naming_symbols.constants.required_modifiers = const

dotnet_naming_style.pascal_case_style.capitalization = pascal_case

# ─── Analyzer severity overrides ─────────────────────────────────────────────
[*.cs]
# Treat style violations as build warnings (enforced in CI via -warnaserror)
dotnet_analyzer_diagnostic.category-Style.severity = warning
# Uncomment to escalate to errors in CI:
# dotnet_analyzer_diagnostic.category-Style.severity               = error