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// Copyright (c) 2021-2022 Miguel Barreto and others
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//! This module contains the [OhMyZshInstallAction] that sets up ohmyzsh

#![cfg(unix)]
use dotfiles_core::action::Action;
use dotfiles_core::error::DotfilesError;
use dotfiles_core::exec_wrapper::execute_commands;
use std::process::Command;
use subprocess::Exec;

/// [OhMyZshInstallAction] sets up ohmyzsh.
pub struct OhMyZshInstallAction {
  skip_chsh: bool,
}

impl OhMyZshInstallAction {
  /// Constructs a new [OhMyZshInstallAction]
  pub fn new(skip_chsh: bool) -> Self {
    OhMyZshInstallAction { skip_chsh }
  }
  /// Returns true if it can find a brew command
  pub fn check_zsh_is_installed(&self) -> bool {
    Command::new("which").arg("zsh").status().unwrap().success()
  }
  /// Returns true if the $ZSH environment var is set
  pub fn check_oh_my_zsh_is_installed(&self) -> bool {
    matches!(std::env::var("ZSH"), Ok(_))
  }
}

impl Action<'_> for OhMyZshInstallAction {
  fn execute(&self) -> Result<(), DotfilesError> {
    if self.check_oh_my_zsh_is_installed() {
      log::info!("oh-my-zsh is already installed, no need to reinstall");
      return Ok(());
    }
    if !self.check_zsh_is_installed() {
      #[cfg(target_os = "linux")]
      let cmd = Exec::shell("sudo apt install zsh");
      #[cfg(target_os = "macos")]
      let cmd = Exec::shell("brew install zsh");
      execute_commands(
        vec![cmd],
        "Couldn't run zsh installation",
        "Unexpected error while running zsh installation",
      )?;
    }

    if !self.skip_chsh {
      execute_commands(
        vec![Exec::shell("chsh -s $(which zsh)")],
        "Couldn't run chsh to set the shell to zsh",
        "Unexpected error while running chsh to set the shell to zsh",
      )?;
    }
    execute_commands(
      vec![Exec::shell(
        "sh -c \"$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)\"",
      )],
      "Couldn't install ohmyzsh",
      "Unexpected error while installing ohmyzsh",
    )
  }
}