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pub use crate::imp::playwright::DeviceDescriptor;
use crate::{
    api::{browser_type::BrowserType, selectors::Selectors},
    imp::{core::*, playwright::Playwright as Impl, prelude::*},
    Error
};
use std::{io, process::Command};

/// Entry point
pub struct Playwright {
    driver: Driver,
    _conn: Connection,
    inner: Weak<Impl>
}

impl Playwright {
    /// Installs playwright driver to "$CACHE_DIR/.ms-playwright/playwright-rust/driver"
    pub async fn initialize() -> Result<Playwright, Error> {
        let driver = Driver::install()?;
        Self::with_driver(driver).await
    }

    /// Constructs from installed playwright driver
    pub async fn with_driver(driver: Driver) -> Result<Playwright, Error> {
        let conn = Connection::run(&driver.executable())?;
        let p = Impl::wait_initial_object(&conn).await?;
        Ok(Self {
            driver,
            _conn: conn,
            inner: p
        })
    }

    /// Runs $ playwright install
    pub fn prepare(&self) -> io::Result<()> {
        Command::new(self.driver.executable())
            .args(&["install"])
            .status()?;
        Ok(())
    }

    /// Launcher
    pub fn chromium(&self) -> BrowserType {
        let inner = weak_and_then(&self.inner, |rc| rc.chromium());
        BrowserType::new(inner)
    }

    /// Launcher
    pub fn firefox(&self) -> BrowserType {
        let inner = weak_and_then(&self.inner, |rc| rc.firefox());
        BrowserType::new(inner)
    }

    /// Launcher
    pub fn webkit(&self) -> BrowserType {
        let inner = weak_and_then(&self.inner, |rc| rc.webkit());
        BrowserType::new(inner)
    }

    pub fn driver(&mut self) -> &mut Driver { &mut self.driver }

    pub fn selectors(&self) -> Selectors {
        let inner = weak_and_then(&self.inner, |rc| rc.selectors());
        Selectors::new(inner)
    }

    pub fn devices(&self) -> Vec<DeviceDescriptor> {
        upgrade(&self.inner)
            .map(|x| x.devices().to_vec())
            .unwrap_or_default()
    }
}