use crate::VarOrBool;

use super::intent_filter::IntentFilter;
use super::meta_data::MetaData;
use super::resources::{
    MipmapOrDrawableResource, Resource, StringResource, StringResourceOrString,
};
use serde::{Deserialize, Serialize};

/// Declares a service (a [`Service`] subclass) as one of the application's components.
///
/// Unlike activities, services lack a visual user interface. They're used to implement
/// long-running background operations or a rich communications API that can be called by
/// other applications. All services must be represented by `<service>` elements in the
/// manifest file. Any that are not declared there will not be seen by the system and will
/// never be run.
///
/// ## Note
/// On Android 8.0 (API level 26) and higher, the system places limitations on what your
/// app can do while it's running in the background. For more information, see the guides
/// that discuss [`background execution limits`] and [`background location limits`].
///
/// ## XML Syntax
/// ```xml
/// <service android:description="string resource"
///          android:directBootAware=["true" | "false"]
///          android:enabled=["true" | "false"]
///          android:exported=["true" | "false"]
///          android:foregroundServiceType=["camera" | "connectedDevice" |
///                                        "dataSync" | "location" | "mediaPlayback" |
///                                        "mediaProjection" | "microphone" | "phoneCall"]
///          android:icon="drawable resource"
///          android:isolatedProcess=["true" | "false"]
///          android:label="string resource"
///          android:name="string"
///          android:permission="string"
///          android:process="string" >
///             ...
/// </service>
/// ```
///
/// ## Contained in
/// * [`<application>`]
///
/// ## Can contain
/// * [`<intent-filter>`]
/// * [`<meta-data>`]
///
/// ## introduced in
/// API Level 1
///
/// [`Service`]: https://developer.android.com/reference/android/app/Service
/// [`background execution limits`]: https://developer.android.com/about/versions/oreo/background
/// [`background location limits`]: https://developer.android.com/about/versions/oreo/background-location-limits
/// [`<application>`]: crate::Application
/// [`<intent-filter>`]: crate::IntentFilter
/// [`<meta-data>`]: crate::MetaData
#[derive(
    Debug, Deserialize, Serialize, YaSerialize, YaDeserialize, PartialEq, Eq, Default, Clone,
)]
pub struct Service {
    /// A string that describes the service to users. The label should be set as a
    /// reference to a string resource, so that it can be localized like other strings
    /// in the user interface.
    #[yaserde(attribute, prefix = "android")]
    pub description: Option<Resource<StringResource>>,
    /// Whether or not the service is direct-boot aware; that is, whether or not it can
    /// run before the user unlocks the device.
    ///
    /// ## Note
    /// During [`Direct Boot`], a service in your application can only access the data
    /// that is stored in device protected storage.
    ///
    /// The default value is `"false"`.
    ///
    /// [`Direct Boot`]: https://developer.android.com/training/articles/direct-boot
    #[yaserde(attribute, prefix = "android", rename = "directBootAware")]
    pub direct_boot_aware: Option<VarOrBool>,
    /// Whether or not the service can be instantiated by the system — `"true"` if it can
    /// be, and `"false"` if not. The default value is `"true"`.
    ///
    /// The [`<application>`] element has its own [`enabled`] attribute that applies to
    /// all application components, including services. The [`<application>`] and
    /// <service> attributes must both be `"true"` (as they both are by default) for
    /// the service to be enabled. If either is `"false"`, the service is disabled; it
    /// cannot be instantiated.
    ///
    /// [`<application>`]: crate::Application
    /// [`enabled`]: crate::Application#structfield.enabled
    #[yaserde(attribute, prefix = "android")]
    pub enabled: Option<VarOrBool>,
    /// Whether or not components of other applications can invoke the service or interact
    /// with it — `"true"` if they can, and `"false"` if not. When the value is
    /// `"false"`, only components of the same application or applications with the
    /// same user ID can start the service or bind to it.
    ///
    /// The default value depends on
    /// whether the service contains intent filters. The absence of any filters means
    /// that it can be invoked only by specifying its exact class name. This implies
    /// that the service is intended only for application-internal use (since others
    /// would not know the class name).So in this case, the default value is
    /// `"false"`. On the other hand, the presence of at least one filter implies that
    /// the service is intended for external use, so the default value is `"true"`.
    ///
    /// This attribute is not the only way to limit the exposure of a service to
    /// other applications. You can also use a permission to limit the
    /// external entities that can interact with the service (see the
    /// [`permission`] attribute).
    ///
    /// [`permission`]: crate::Service#structfield.enabled
    #[yaserde(attribute, prefix = "android")]
    pub exported: Option<VarOrBool>,
    /// Specify that the service is a [`foreground service`] that satisfies a particular
    /// use case. For example, a foreground service type of `"location"` indicates
    /// that an app is getting the device's current location, usually to [`continue a
    /// user-initiated action`] related to device location.
    ///
    /// You can assign multiple foreground service types to a particular service.
    ///
    /// [`foreground service`]: https://developer.android.com/guide/components/services
    /// [`continue a user-initiated action`]: https://developer.android.com/training/location/background#continue-user-initiated-action
    #[yaserde(attribute, prefix = "android", rename = "foregroundServiceType")]
    pub foreground_service_type: Option<ForegroundServiceType>,
    /// An icon representing the service. This attribute must be set as a reference to a
    /// drawable resource containing the image definition. If it is not set, the icon
    /// specified for the application as a whole is used instead (see the
    /// [`<application>`] element's [`icon`](crate::Application#structfield.icon)
    /// attribute).
    ///
    /// The service's icon — whether set here or by the [`<application>`] element — is
    /// also the default icon for all the service's intent filters (see the
    /// [`<intent-filter>`] element's [`icon`](crate::IntentFilter#structfield.icon)
    /// attribute).
    ///
    /// [`<application>`]: crate::Application
    /// [`<intent-filter>`]: crate::IntentFilter
    #[yaserde(attribute, prefix = "android")]
    pub icon: Option<MipmapOrDrawableResource>,
    /// If set to true, this service will run under a special process that is isolated
    /// from the rest of the system and has no permissions of its own.
    /// The only communication with it is through the Service API (binding and
    /// starting).
    #[yaserde(attribute, prefix = "android", rename = "isolatedProcess")]
    pub isolated_process: Option<VarOrBool>,
    /// A name for the service that can be displayed to users. If this attribute is not
    /// set, the label set for the application as a whole is used instead
    /// (see the [`<application>`] element's
    /// [`label`](crate::Application#structfield.label) attribute).
    ///
    /// The service's label — whether set here or by the [`<application>`] element — is
    /// also the default label for all the service's intent filters (see the
    /// [`<intent-filter>`] element's [`label`](crate::IntentFilter#structfield.label)
    /// attribute).
    ///
    /// The label should be set as a reference to a string resource, so that it can be
    /// localized like other strings in the user interface. However, as a convenience
    /// while you're developing the application, it can also be set as a raw string.
    ///
    /// [`<application>`]: crate::Application
    /// [`<intent-filter>`]: crate::IntentFilter
    #[yaserde(attribute, prefix = "android")]
    pub label: Option<StringResourceOrString>,
    /// The name of the [`Service`] subclass that implements the service. This should be a
    /// fully qualified class name (such as, `"com.example.project.RoomService"`).
    /// However, as a shorthand, if the first character of the name is a period (for
    /// example, `".RoomService"`), it is appended to the package name specified in
    /// the [`<manifest>`] element.
    ///
    /// Once you publish your application, you [`should not change this name`] (unless
    /// you've set [`android:exported="false"`]).
    ///
    /// There is no default. The name must be specified.
    ///
    /// [`Service`]: https://developer.android.com/reference/android/app/Service
    /// [`<manifest>`]: crate::AndroidManifest
    /// [`should not change this name`]: https://android-developers.googleblog.com/2011/06/things-that-cannot-change.html
    /// [`android:exported="false"`]: crate::Service#structfield.exported
    #[yaserde(attribute, prefix = "android")]
    pub name: String,
    /// The name of a permission that an entity must have in order to launch the service
    /// or bind to it. If a caller of [`startService()`], [`bindService()`],
    /// or [`stopService()`] has not been granted this permission, the method
    /// will not work and the Intent object will not be delivered to the
    /// service.
    ///
    /// If this attribute is not set, the permission set by the [`<application>`]
    /// element's [`permission`] attribute applies to the service. If neither
    /// attribute is set, the service is not protected by a permission.
    ///
    /// For more information on permissions, see the [`Permissions`] section in the
    /// introduction and a separate document, [`Security and Permissions`].
    ///
    /// [`startService()`]: https://developer.android.com/reference/android/content/Context#startService(android.content.Intent)
    /// [`bindService()`]: https://developer.android.com/reference/android/content/Context#bindService(android.content.Intent,%20android.content.ServiceConnection,%20int)
    /// [`stopService()`]: https://developer.android.com/reference/android/content/Context#stopService(android.content.Intent)
    /// [`<application>`]: crate::Application
    /// [`Security and Permissions`]: https://developer.android.com/training/articles/security-tips
    /// [`permission`]: crate::Application#structfield.permission
    /// [`Permissions`]: https://developer.android.com/guide/topics/manifest/manifest-intro#perms
    #[yaserde(attribute, prefix = "android")]
    pub permission: Option<String>,
    /// The name of the process where the service is to run. Normally, all components of
    /// an application run in the default process created for the application. It has
    /// the same name as the application package. The [`<application>`] element's
    /// [`process`] attribute can set a different default for all components. But
    /// component can override the default with its own process attribute, allowing
    /// you to spread your application across multiple processes.
    ///
    /// If the name assigned to this attribute begins with a colon `(':')`, a new process,
    /// private to the application, is created when it's needed and the service runs
    /// in that process. If the process name begins with a lowercase character, the
    /// service will run in a global process of that name, provided that it has
    /// permission to do so. This allows components in different applications to share
    /// a process, reducing resource usage.
    ///
    /// [`<application>`]: crate::Application
    /// [`process`]: crate::Application#structfield.process
    #[yaserde(attribute, prefix = "android")]
    pub process: Option<String>,
    #[yaserde(rename = "intent-filter")]
    #[serde(default, skip_serializing_if = "Vec::is_empty")]
    pub intent_filter: Vec<IntentFilter>,
    #[yaserde(rename = "meta-data")]
    #[serde(default, skip_serializing_if = "Vec::is_empty")]
    pub meta_data: Vec<MetaData>,
}

#[derive(Debug, Deserialize, Serialize, YaSerialize, YaDeserialize, PartialEq, Eq, Clone)]
#[serde(rename_all = "camelCase")]
#[derive(Default)]
pub enum ForegroundServiceType {
    #[yaserde(rename = "camera")]
    #[default]
    Camera,
    #[yaserde(rename = "connectedDevice")]
    ConnectedDevice,
    #[yaserde(rename = "dataSync")]
    DataSync,
    #[yaserde(rename = "location")]
    Location,
    #[yaserde(rename = "mediaPlayback")]
    MediaPlayback,
    #[yaserde(rename = "mediaProjection")]
    MediaProjection,
    #[yaserde(rename = "microphone")]
    Microphone,
    #[yaserde(rename = "phoneCall")]
    PhoneCall,
}