🤖 CI: Add lint workflow

- Lints code using SwiftLint

Author: superturboryan

.github/workflows/lint.yml

@@ -0,0 +1,44 @@
+name: 🧹 Lint
+
+on:
+  pull_request:
+    branches: [ "main" ]
+    types: [opened, synchronize]
+  
+  # push:
+    # Every push if left empty
+
+jobs:
+  
+  lint-code:
+    runs-on: macos-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10' 
+
+      - name: Check last commit for skip keyword
+        run: python workflow_scripts/check_latest_commit_for_skip.py >> $GITHUB_ENV
+      
+      - name: ⏩ SKIPPING REMAINING STEPS 👀
+        if: env.should_skip == 'true'
+        run: exit 0
+
+      - name: Set up Ruby
+        if: env.should_skip == 'false'
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.3.5' # latest stable as of 2 November 2024
+      
+      - name: Install SwiftLint
+        if: env.should_skip == 'false'
+        run: brew install swiftlint
+  
+      - name: Lint code using SwiftLint
+        if: env.should_skip == 'false'
+        run: swiftlint --strict

.gitignore

@@ -10,4 +10,4 @@ xcuserdata/
 *.xcworkspacedata
 *.DS_Store
 
-*SpotifyConfig.swift
+*.build

.swiftlint.yml

@@ -0,0 +1,74 @@
+included:
+  - Sources
+
+disabled_rules:
+  - trailing_whitespace
+  - trailing_comma
+  - void_function_in_ternary
+#  - force_cast
+
+opt_in_rules:
+  - anyobject_protocol
+  - array_init
+  - attributes
+  - closure_end_indentation
+  - closure_spacing
+  - collection_alignment
+  - contains_over_filter_count
+  - contains_over_filter_is_empty
+  - contains_over_first_not_nil
+  - discouraged_object_literal
+  - empty_count
+  - empty_string
+  - empty_xctest_method
+  - explicit_init
+  - fallthrough
+  - file_header
+  - file_name
+  - first_where
+  - flatmap_over_map_reduce
+  - identical_operands
+  - joined_default_parameter
+  - legacy_random
+  - let_var_whitespace
+  - last_where
+  - literal_expression_end_indentation
+  - lower_acl_than_parent
+  - modifier_order
+  - nimble_operator
+  - nslocalizedstring_key
+  - number_separator
+  - object_literal
+  - operator_usage_whitespace
+  - overridden_super_call
+  - override_in_extension
+  - pattern_matching_keywords
+  - private_action
+  - private_outlet
+  - prohibited_interface_builder
+  - prohibited_super_call
+  - quick_discouraged_call
+  - quick_discouraged_focused_test
+  - quick_discouraged_pending_test
+  - reduce_into
+  - redundant_nil_coalescing
+  - redundant_type_annotation
+  - single_test_class
+  - sorted_first_last
+  - sorted_imports
+  - static_operator
+  - strong_iboutlet
+  - toggle_bool
+  - unavailable_function
+  - unneeded_parentheses_in_closure_argument
+  - unowned_variable_capture
+  - untyped_error_in_catch
+  - vertical_parameter_alignment_on_call
+  - xct_specific_matcher
+  - yoda_condition
+
+# Customize line length settings
+line_length:
+  warning: 110
+  error: 150
+  ignores_comments: true

workflow_scripts/check_latest_commit_for_skip.py

@@ -0,0 +1,32 @@
+import subprocess
+import sys
+
+# Define the keyword that should skip the workflow
+SKIP_KEYWORDS = ["wip", "skip-ci", "no-build"]
+
+# Function to get the latest commit message
+def get_latest_commit_message():
+    try:
+        # Use subprocess to run the git command and get the output
+        commit_message = subprocess.check_output(
+            ["git", "log", "-1", "--pretty=%B"], 
+            text=True
+        ).strip()
+        return commit_message
+    except subprocess.CalledProcessError as e:
+        print(f"Error getting commit message: {e}")
+        sys.exit(1)
+
+# Function to check if the commit message contains any skip keyword
+def contains_skip_keyword(commit_message, keywords):
+    return any(keyword in commit_message for keyword in keywords)
+
+# Main logic
+if __name__ == "__main__":
+    commit_message = get_latest_commit_message()
+
+    # Output values that can be used in the workflow environment
+    if contains_skip_keyword(commit_message, SKIP_KEYWORDS):
+        print(f"should_skip={True}") 
+    else:
+        print(f"should_skip={False}")