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//
// Copyright (C) 2018 Kubos Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License")
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

//! Kubos Service for interacting with [ISIS Antenna Systems](https://www.isispace.nl/product-category/products/antenna-systems/)
//!
//! # Configuration
//!
//! The service must be configured in `/home/system/etc/config.toml` with the following fields:
//!
//! - `[isis-ants-service.addr]`
//!
//!     - `ip` - Specifies the service's IP address
//!     - `port` - Specifies the port on which the service will be listening for UDP packets
//!
//! - `[isis-ants-service]`
//!
//!     - `bus` - Specifies the I2C bus the antenna system is connected to
//! 	- `primary` - Specifies the I2C address of the antenna system's primary microcontroller
//! 	- `secondary` - Specifies the I2C address of the secondary microcontroller. If no secondary contoller is present, this value should be `"0x00"`.
//! 	- `antennas` - Specifies the number of antennas present in the system. Expected value: 2 or 4.
//! 	- `wd_timeout` - Specifies the interval at which the AntS watchdog should be automatically kicked. To disable automatic kicking, this value should be `0`.
//!
//! For example:
//!
//! ```toml
//! [isis-ants-service.addr]
//! ip = "0.0.0.0"
//! port = 8006
//!
//! [isis-ants-service]
//! bus = "/dev/i2c-0"
//! primary = "0x31"
//! secondary = "0x32"
//! antennas = 4
//! wd_timeout = 10
//! ```
//!
//! # Starting the Service
//!
//! The service should be started automatically by its init script, but may also be started manually:
//!
//! ```shell
//! $ isis-ants-service
//! Kubos antenna systems service started
//! Listening on: 0.0.0.0:8006
//! ```
//!
//! # Queries
//!
//! ## Ping
//!
//! Test query to verify service is running without attempting
//! to communicate with the underlying subsystem
//!
//! ```json
//! {
//!     ping: "pong"
//! }
//! ```
//!
//! ## ACK
//!
//! Get the last run mutation
//!
//! ```json
//! {
//!     ack: AckCommand
//! }
//! ```
//!
//! ## Errors
//!
//! Get all errors encountered since the last time this field was queried
//!
//! ```json
//! {
//!     errors: [String]
//! }
//! ```
//!
//! ## Power Status
//!
//! Get the current power state and uptime of the system
//!
//! ```json
//! {
//!     power {
//!         state: PowerState,
//!         uptime: Int
//!     }
//! }
//! ```
//!
//! ## Configuration
//!
//! Get the current microcontroller which commands will be sent to
//!
//! ```json
//! {
//!     config: ConfigureController
//! }
//! ```
//!
//! ## Telemetry
//!
//! Get current telemetry information for the system
//!
//! ```json
//! {
//!     telemetry {
//!         nominal {
//!             rawTemp: Int,
//!             uptime: Int,
//!             sysBurnActive: Boolean,
//!             sysIgnoreDeploy: Boolean,
//!             sysArmed: Boolean,
//!             ant1NotDeployed: Boolean,
//!             ant1StoppedTime: Boolean,
//!             ant1Active: Boolean,
//!             ant2NotDeployed: Boolean,
//!             ant2StoppedTime: Boolean,
//!             ant2Active: Boolean,
//!             ant3NotDeployed: Boolean,
//!             ant3StoppedTime: Boolean,
//!             ant3Active: Boolean,
//!             ant4NotDeployed: Boolean,
//!             ant4StoppedTime: Boolean,
//!             ant4Active: Boolean
//!         },
//!     	   debug {
//!             ant1ActivationCount: Int,
//!             ant1ActivationTime: Int,
//!             ant2ActivationCount: Int,
//!             ant2ActivationTime: Int,
//!             ant3ActivationCount: Int,
//!             ant3ActivationTime: Int,
//!             ant4ActivationCount: Int,
//!             ant4ActivationTime: Int,
//!         }
//!     }
//! }
//! ```
//!
//! ## Test Results
//!
//! Get the test results of the last run test
//!
//! Note: For this service, this actually just fetches the nominal
//! and debug telemetry of the system, since there is no actual
//! built-in test
//!
//! ```json
//! {
//!     testResults{
//!         success,
//!         telemetryNominal{...},
//!         telemetryDebug{...}
//!     }
//! }
//! ```
//!
//! ## System Armed Status
//!
//! Get the current armed/disarmed status of the system
//!
//! ```json
//! {
//!     armStatus: ArmStatus
//! }
//! ```
//!
//! ## System deployment status
//!
//! Get the current deployment status of the system
//!
//! ```json
//! {
//!     deploymentStatus {
//!         status: DeploymentStatus,
//!         sysBurnActive: Boolean,
//!         sysIgnoreDeploy: Boolean,
//!         sysArmed: Boolean,
//!         ant1NotDeployed: Boolean,
//!         ant1StoppedTime: Boolean,
//!         ant1Active: Boolean,
//!         ant2NotDeployed: Boolean,
//!         ant2StoppedTime: Boolean,
//!         ant2Active: Boolean,
//!         ant3NotDeployed: Boolean,
//!         ant3StoppedTime: Boolean,
//!         ant3Active: Boolean,
//!         ant4NotDeployed: Boolean,
//!         ant4StoppedTime: Boolean,
//!         ant4Active: Boolean
//! }
//! ```
//!
//! # Mutations
//!
//!
//! ## Errors
//!
//! Get all errors encountered while processing this GraphQL request
//!
//! Note: This will only return errors thrown by fields which have
//! already been processed, so it is recommended that this field be specified last.
//!
//! ```json
//! mutation {
//!     errors: [String]
//! }
//! ```
//!
//! ## No-Op
//!
//! Execute a trivial command against the system
//!
//! ```json
//! mutation {
//!     noop {
//!         errors: String,
//!         success: Boolean
//!    }
//! }
//! ```
//!
//! ## Set Power State
//!
//! Control the power state of the system
//!
//! - state: Power state the system should be changed to
//!   Note: The only valid input for this service is `RESET`
//!
//! ```json
//! mutation {
//!     controlPower(state: PowerState) {
//!         errors: String,
//!         success: Boolean,
//!         power: PowerState
//!     }
//! }
//! ```
//!
//! ## Configuration
//!
//! Configure the system
//!
//! - config: Set which microcontroller future commands should be issued from
//!
//! ```json
//! mutation {
//!     configureHardware(config: ConfigureController) {
//!         errors: String,
//!         success: Boolean,
//!         config: ConfigureController
//!    }
//! }
//! ```
//!
//! ## System Self-Test
//!
//! Run a system self-test
//!
//! - test: Type of self-test to perform
//!
//! ```json
//! mutation {
//!     testHardware(test: TestType) {
//!         ... on IntegrationTestResults {
//!             errors: String,
//!             success: Boolean,
//!             telemetryNominal{...},
//!             telemetryDebug{...}
//!         }
//!         ... on HardwareTestResults {
//!             errors: "Not Implemented",
//!             success: true,
//!             data: Empty
//!         }
//!    }
//! }
//! ```
//!
//! ## Passthrough
//!
//! Pass a custom command through to the system
//!
//! - command: String containing the hex values to be sent (ex. "C3")
//!   It will be converted to a byte array before transfer.
//! - rxLen: Number of response bytes to read
//!
//! ```json
//! mutation {
//!     issueRawCommand(command: String, rx_len: Int) {
//!         errors: String,
//!         success: Boolean,
//!         response: String
//!     }
//! }
//! ```
//!
//! ## Arm/Disarm
//!
//! Arm/Disarm the system
//!
//! - state: Armed/Disarmed state the system should be changed to
//!
//! ```json
//! mutation {
//!     arm(state: ArmState) {
//!         errors: String,
//!         success: Boolean
//!    }
//! ```
//!
//! ## Deploy Antennas
//!
//! Deploy antenna/s
//!
//! - ant: (Default - All) Antenna to deploy
//! - force: (Default - false) Whether current deployment state should be ignored/overridden
//! - time: Maximum amount of time to spend attempting to deploy the antenna
//!   (for 'All', this is the amount of time spent for each antenna)
//!
//! ```json
//! mutation {
//!     deploy(ant: DeployType = DeployType::All, force: Boolean = false, time: Int) {
//!         errors: String,
//!         success: Boolean
//!    }
//! }
//! ```
//!

#![deny(missing_docs)]
#![recursion_limit = "256"]

#[macro_use]
extern crate juniper;

use crate::model::Subsystem;
pub use crate::objects::*;
use crate::schema::{MutationRoot, QueryRoot};
use failure::format_err;
use isis_ants_api::AntSResult;
use kubos_service::{Config, Service};
use log::error;
use syslog::Facility;

mod model;
mod objects;
mod schema;
#[cfg(test)]
mod tests;

fn main() -> AntSResult<()> {
    syslog::init(
        Facility::LOG_DAEMON,
        log::LevelFilter::Debug,
        Some("isis-ants-service"),
    )
    .unwrap();

    let config = Config::new("isis-ants-service")
        .map_err(|err| {
            error!("Failed to load service config: {:?}", err);
            err
        })
        .unwrap();

    let bus = config
        .get("bus")
        .ok_or_else(|| {
            error!("Failed to load 'bus' config value");
            format_err!("Failed to load 'bus' config value")
        })
        .unwrap();
    let bus = bus.as_str().unwrap();

    let primary = config
        .get("primary")
        .ok_or_else(|| {
            error!("No 'primary' value found in 'isis-ants-service' section of config");
            format_err!("No 'primary' value found in 'isis-ants-service' section of config")
        })
        .unwrap();
    let primary = primary.as_str().unwrap();
    let primary: u8 = if primary.starts_with("0x") {
        u8::from_str_radix(&primary[2..], 16).unwrap()
    } else {
        u8::from_str_radix(primary, 16).unwrap()
    };

    let secondary = config
        .get("secondary")
        .ok_or_else(|| {
            error!("No 'secondary' value found in 'isis-ants-service' section of config");
            format_err!("No 'secondary' value found in 'isis-ants-service' section of config")
        })
        .unwrap();
    let secondary = secondary.as_str().unwrap();
    let secondary: u8 = if secondary.starts_with("0x") {
        u8::from_str_radix(&secondary[2..], 16).unwrap()
    } else {
        u8::from_str_radix(secondary, 16).unwrap()
    };

    let antennas = config
        .get("antennas")
        .ok_or_else(|| {
            error!("No 'antennas' value found in 'isis-ants-service' section of config");
            format_err!("No 'antennas' value found in 'isis-ants-service' section of config")
        })
        .unwrap();
    let antennas = antennas.as_integer().unwrap() as u8;

    let wd_timeout = config
        .get("wd_timeout")
        .ok_or_else(|| {
            error!("No 'wd_timeout' value found in 'isis-ants-service' section of config");
            format_err!("No 'wd_timeout' value found in 'isis-ants-service' section of config")
        })
        .unwrap();
    let wd_timeout = wd_timeout.as_integer().unwrap() as u32;

    Service::new(
        config,
        Subsystem::new(bus, primary, secondary, antennas, wd_timeout)?,
        QueryRoot,
        MutationRoot,
    )
    .start();

    Ok(())
}