openleadr-client 0.2.4

use crate::{
    Client, ClientKind, EventClient, Filter, PaginationOptions, ProgramId, ProgramRequest,
    Timeline,
    error::{Error, Result},
};
use openleadr_wire::{
    Program,
    event::{EventInterval, EventRequest, Priority},
};

/// A client for interacting with the data in a specific program and the events
/// contained in the program.
#[derive(Debug, Clone)]
pub struct ProgramClient<K> {
    client: Client<K>,
    data: Program,
}

impl<K: ClientKind> ProgramClient<K> {
    pub(super) fn from_program(client: Client<K>, program: Program) -> Self {
        Self {
            client,
            data: program,
        }
    }

    /// Get the id of the program
    pub fn id(&self) -> &ProgramId {
        &self.data.id
    }

    /// Get the time the program was created on the VTN
    pub fn created_date_time(&self) -> chrono::DateTime<chrono::Utc> {
        self.data.created_date_time
    }

    /// Get the time the program was last modified on the VTN
    pub fn modification_date_time(&self) -> chrono::DateTime<chrono::Utc> {
        self.data.modification_date_time
    }

    /// Read the data of the program
    pub fn content(&self) -> &ProgramRequest {
        &self.data.content
    }

    /// Modify the data of the program.
    /// Make sure to call [`update`](Self::update)
    /// after your modifications to store them on the VTN
    pub fn content_mut(&mut self) -> &mut ProgramRequest {
        &mut self.data.content
    }

    /// Stores any modifications made to the program content at the server
    /// and refreshes the locally stored data with the returned VTN data
    pub async fn update(&mut self) -> Result<()> {
        self.data = self
            .client
            .client_ref
            .put(&format!("programs/{}", self.id()), &self.data.content)
            .await?;
        Ok(())
    }

    /// Delete the program from the VTN
    pub async fn delete(self) -> Result<Program> {
        self.client
            .client_ref
            .delete(&format!("programs/{}", self.id()))
            .await
    }

    /// Create a new event on the VTN.
    /// The content should be created with [`ProgramClient::new_event`]
    /// to automatically insert the correct program ID
    pub async fn create_event(&self, event_data: EventRequest) -> Result<EventClient<K>> {
        if &event_data.program_id != self.id() {
            return Err(Error::InvalidParentObject);
        }
        let event = self.client.client_ref.post("events", &event_data).await?;
        Ok(EventClient::from_event(
            self.client.client_ref.clone(),
            event,
        ))
    }

    /// Create a new event object within the program
    pub fn new_event(&self, intervals: Vec<EventInterval>) -> EventRequest {
        EventRequest {
            program_id: self.id().clone(),
            event_name: None,
            priority: Priority::UNSPECIFIED,
            targets: vec![],
            report_descriptors: None,
            payload_descriptors: None,
            interval_period: None,
            duration: None,
            intervals: Some(intervals),
        }
    }

    /// Low-level operation that gets a list of events for this program from the VTN
    /// with the given query parameters.
    ///
    /// To automatically iterate pages, use [`self.get_event_list`](Self::get_event_list)
    pub async fn get_events_request(
        &self,
        filter: Filter<'_, impl AsRef<str>>,
        pagination: PaginationOptions,
    ) -> Result<Vec<EventClient<K>>> {
        self.client
            .get_events(Some(self.id()), filter, pagination)
            .await
    }

    /// Get a list of events from the VTN with the given query parameters
    pub async fn get_event_list(
        &self,
        filter: Filter<'_, impl AsRef<str> + Clone>,
    ) -> Result<Vec<EventClient<K>>> {
        self.client.get_event_list(Some(self.id()), filter).await
    }

    /// Retrieves the events for this program from the VTN and tries to build a [`Timeline`] from it.
    pub async fn get_timeline(
        &self,
        filter: Filter<'_, impl AsRef<str> + Clone>,
    ) -> Result<Timeline> {
        let events = self.get_event_list(filter).await?;
        let events = events.iter().map(|e| e.content()).collect();
        Timeline::from_events(&self.data, events).ok_or(Error::InvalidInterval)
    }
}