dipper 0.5.3

An out-of-the-box modular dependency injection web application framework.
Documentation 
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use std::{marker::PhantomData, sync::Arc};

use crate::dyn_mod::{
    Component, ComponentFn, DmRouter, HasComponent, HasProvider, Module, ModuleBuildContext,
    component::Interface,
    module::{ComponentMap, ParameterMap},
    parameters::ComponentParameters,
    provider::ProviderFn,
};

/// Builds a [`Module`]. Component parameters can be set, and both components
/// and providers implementations can be overridden.
///
/// [`Module`]: trait.Module.html
pub struct ModuleBuilder<M: Module> {
    parameters: ParameterMap,
    submodules: M::Submodules,
    component_overrides: ComponentMap,
    component_fn_overrides: ComponentMap,
    provider_overrides: ComponentMap,
    router: Option<DmRouter>,
    routable_preset: bool,
    _module: PhantomData<M>,
}

#[allow(dead_code)]
impl<M: Module> ModuleBuilder<M> {
    /// Create a ModuleBuilder by providing the module's submodules.
    pub fn with_submodules(submodules: M::Submodules) -> Self {
        ModuleBuilder {
            parameters: ParameterMap::new(),
            submodules,
            component_overrides: ComponentMap::new(),
            component_fn_overrides: ComponentMap::new(),
            provider_overrides: ComponentMap::new(),
            router: None,
            routable_preset: false,
            _module: PhantomData,
        }
    }

    /// Set up a router for automatically registering routes.
    pub(crate) fn with_router(mut self, router: DmRouter) -> Self {
        self.router = Some(router);
        self
    }

    /// Set the preset value of routable.
    pub(crate) const fn with_routable_preset(mut self, routable_preset: bool) -> Self {
        self.routable_preset = routable_preset;
        self
    }

    /// Set the parameters of the specified component. If the parameters are not
    /// manually set, the defaults will be used.
    pub fn with_component_parameters<C: Component<M>>(mut self, params: C::Parameters) -> Self
    where
        M: HasComponent<C::Interface>,
    {
        self.parameters
            .insert(ComponentParameters::<C, C::Parameters>::new(params));
        self
    }

    /// Override a component implementation. This method is best used when the
    /// overriding component has no injected dependencies.
    pub fn with_component_override<I: Interface + ?Sized>(mut self, component: Box<I>) -> Self
    where
        M: HasComponent<I>,
    {
        self.component_overrides.insert::<Arc<I>>(Arc::from(component));
        self
    }

    /// Override a component implementation. This method is best used when the
    /// overriding component has injected dependencies.
    pub fn with_component_override_fn<I: Interface + ?Sized>(mut self, component_fn: ComponentFn<M, I>) -> Self
    where
        M: HasComponent<I>,
    {
        self.component_fn_overrides.insert(component_fn);
        self
    }

    /// Override a provider implementation.
    pub(crate) fn with_provider_override<I: 'static + ?Sized>(mut self, provider_fn: ProviderFn<M, I>) -> Self
    where
        M: HasProvider<I>,
    {
        self.provider_overrides.insert(Arc::new(provider_fn));
        self
    }

    /// Build the module
    pub(crate) fn build(self) -> M {
        M::build(ModuleBuildContext::new(
            self.parameters,
            self.component_overrides,
            self.component_fn_overrides,
            self.provider_overrides,
            self.submodules,
            self.router,
            self.routable_preset,
        ))
    }
}