Builder Configuration

RuniqueApp::builder(config) is the single entry point. All middleware configuration goes through .middleware(|m| { ... }).

Full example

let app = RuniqueApp::builder(config)
    .routes(url::routes())
    .with_database(db)
    .middleware(|m| {
        m.with_csp(|c| {
              c.policy(SecurityPolicy::strict())
               .with_header_security(true)
           })
         .with_allowed_hosts(|h| {
              h.enabled(true)
               .host("mysite.com")
               .host("www.mysite.com")
           })
         .with_cache(true)
    })
    .statics()
    .build()
    .await?;

Conditional by environment

.middleware(|m| {
    m.with_csp(|c| {
          c.policy(SecurityPolicy::strict())
           .with_upgrade_insecure(!is_debug())
       })
     .with_allowed_hosts(|h| {
          h.enabled(!is_debug())  // disabled in dev, active in prod
           .host("mysite.com")
       })
})

In DEBUG=true mode, is_debug() returns true — security guards can be conditionally disabled.