import fc from 'fast-check';

// Feature: website-cloning-platform, Property 32: PostgreSQL Data Storage
describe('Database Connectivity Properties', () => {
  
  test('Property 32: Database connection configuration should be valid', async () => {
    await fc.assert(
      fc.asyncProperty(
        fc.record({
          host: fc.domain(),
          port: fc.integer({ min: 1024, max: 65535 }),
          database: fc.string({ minLength: 1, maxLength: 50 }).filter(s => /^[a-zA-Z][a-zA-Z0-9_]*$/.test(s)),
          username: fc.string({ minLength: 1, maxLength: 50 }).filter(s => /^[a-zA-Z][a-zA-Z0-9_]*$/.test(s)),
          password: fc.string({ minLength: 8, maxLength: 100 }).filter(s => /^[a-zA-Z0-9!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]*$/.test(s) && !s.includes(' '))
        }),
        async (config) => {
          // Test that database URL construction is valid
          const encodedPassword = encodeURIComponent(config.password);
          const databaseUrl = `postgresql://${config.username}:${encodedPassword}@${config.host}:${config.port}/${config.database}`;
          
          // Validate URL format
          try {
            const url = new URL(databaseUrl);
            return url.protocol === 'postgresql:' && 
                   url.hostname === config.host &&
                   url.port === config.port.toString() &&
                   url.pathname === `/${config.database}` &&
                   url.username === config.username;
          } catch (error) {
            return false;
          }
        }
      ),
      { 
        numRuns: 100,
        timeout: 5000
      }
    );
  });

  test('Property 32: Database connection parameters should be properly validated', async () => {
    await fc.assert(
      fc.asyncProperty(
        fc.record({
          maxConnections: fc.integer({ min: 1, max: 100 }),
          connectionTimeout: fc.integer({ min: 1000, max: 60000 }),
          queryTimeout: fc.integer({ min: 1000, max: 300000 }),
          retryAttempts: fc.integer({ min: 0, max: 10 })
        }),
        async (params) => {
          // Validate that connection parameters are within acceptable ranges
          const isValidMaxConnections = params.maxConnections >= 1 && params.maxConnections <= 100;
          const isValidConnectionTimeout = params.connectionTimeout >= 1000 && params.connectionTimeout <= 60000;
          const isValidQueryTimeout = params.queryTimeout >= 1000 && params.queryTimeout <= 300000;
          const isValidRetryAttempts = params.retryAttempts >= 0 && params.retryAttempts <= 10;
          
          return isValidMaxConnections && 
                 isValidConnectionTimeout && 
                 isValidQueryTimeout && 
                 isValidRetryAttempts;
        }
      ),
      { 
        numRuns: 100,
        timeout: 5000
      }
    );
  });

  test('Property 32: Database schema validation should handle various data types', async () => {
    await fc.assert(
      fc.asyncProperty(
        fc.record({
          stringField: fc.string({ minLength: 0, maxLength: 1000 }),
          integerField: fc.integer({ min: -2147483648, max: 2147483647 }),
          booleanField: fc.boolean(),
          dateField: fc.date({ min: new Date('1900-01-01'), max: new Date('2100-12-31') }),
          optionalField: fc.option(fc.string({ minLength: 1, maxLength: 100 }))
        }),
        async (data) => {
          // Validate that data types are properly handled
          const isValidString = typeof data.stringField === 'string';
          const isValidInteger = Number.isInteger(data.integerField) && 
                                data.integerField >= -2147483648 && 
                                data.integerField <= 2147483647;
          const isValidBoolean = typeof data.booleanField === 'boolean';
          const isValidDate = data.dateField instanceof Date && !isNaN(data.dateField.getTime());
          const isValidOptional = data.optionalField === null || typeof data.optionalField === 'string';
          
          return isValidString && isValidInteger && isValidBoolean && isValidDate && isValidOptional;
        }
      ),
      { 
        numRuns: 100,
        timeout: 5000
      }
    );
  });

  test('Property 32: Database transaction properties should be maintained', async () => {
    await fc.assert(
      fc.asyncProperty(
        fc.array(
          fc.record({
            operation: fc.constantFrom('INSERT', 'UPDATE', 'DELETE', 'SELECT'),
            table: fc.constantFrom('users', 'projects', 'pages', 'assets'),
            data: fc.record({
              id: fc.string({ minLength: 1, maxLength: 50 }),
              timestamp: fc.date()
            })
          }),
          { minLength: 1, maxLength: 10 }
        ),
        async (operations) => {
          // Test transaction properties: atomicity, consistency, isolation, durability (ACID)
          
          // Atomicity: All operations in a transaction should succeed or fail together
          const hasConsistentOperations = operations.every(op => 
            ['INSERT', 'UPDATE', 'DELETE', 'SELECT'].includes(op.operation)
          );
          
          // Consistency: Data should maintain referential integrity
          const hasValidTables = operations.every(op => 
            ['users', 'projects', 'pages', 'assets'].includes(op.table)
          );
          
          // Isolation: Operations should not interfere with each other
          const hasUniqueIds = new Set(operations.map(op => op.data.id)).size === operations.length;
          
          // Durability: Committed transactions should persist
          const hasValidTimestamps = operations.every(op => 
            op.data.timestamp instanceof Date && !isNaN(op.data.timestamp.getTime())
          );
          
          return hasConsistentOperations && hasValidTables && hasUniqueIds && hasValidTimestamps;
        }
      ),
      { 
        numRuns: 100,
        timeout: 5000
      }
    );
  });
});