rules:
  # Template literal with variable interpolation in SQL
  # Excludes known-safe patterns: updates.join (column SET clauses),
  # this.migrationsTable (hardcoded private field),
  # placeholders (generated '?,?,?' for IN clauses)
  - id: profilarr.sql.template-literal-interpolation
    patterns:
      - pattern-regex: 'db\.(exec|execute|query|queryFirst|prepare)\(\s*`[^`]*\$\{(?!updates\.join|this\.migrationsTable|placeholders)[^}]+\}'
    paths:
      include:
        - '/src/lib/server/**'
    message: >
      SQL statement uses template literal with variable interpolation.
      Only static strings and known-safe patterns (updates.join for
      SET clauses, this.migrationsTable) are acceptable. All dynamic
      values MUST use parameterized queries (? placeholders).
    languages: [generic]
    severity: ERROR
    metadata:
      category: security
      subcategory:
        - vuln
      confidence: MEDIUM
      cwe:
        - 'CWE-89: Improper Neutralization of Special Elements used in an SQL Command'

  # db.exec() with non-literal argument
  # Excludes migrations (execute SQL from migration objects) and
  # PCD cache (SQL-as-configuration by design)
  - id: profilarr.sql.exec-with-variable
    patterns:
      - pattern: 'db.exec($ARG)'
      - metavariable-pattern:
          metavariable: $ARG
          patterns:
            - pattern-not: '"..."'
            - pattern-not: "'...'"
            - pattern-not: '`...`'
    paths:
      include:
        - '/src/lib/server/**'
      exclude:
        - '/src/lib/server/db/migrations/**'
        - '/src/lib/server/pcd/database/cache.ts'
    message: >
      db.exec() called with a variable argument. db.exec() does not
      support parameterized queries, so any dynamic content is an
      injection risk. Use db.prepare() + bind parameters instead.
    languages: [typescript]
    severity: ERROR
    metadata:
      category: security
      subcategory:
        - vuln
      confidence: HIGH
      cwe:
        - 'CWE-89: Improper Neutralization of Special Elements used in an SQL Command'