// This file is part of Deja-Vu.
//
// Deja-Vu is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Deja-Vu is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Deja-Vu. If not, see <https://www.gnu.org/licenses/>.
#![allow(clippy::missing_errors_doc)]
#![allow(clippy::missing_panics_doc)]

use super::{disk::PartitionTableType, drivers::Driver};
use crate::tasks::TaskType;
use color_eyre::Result;
use std::path::PathBuf;

#[derive(Clone, Debug, Default, PartialEq)]
pub enum SafeMode {
    #[default]
    Disable,
    Enable,
}

#[must_use]
pub fn configure_disk(
    letter_boot: &str,
    letter_os: &str,
    safe_mode: SafeMode,
    system32: &str,
    table_type: &PartitionTableType,
) -> Vec<TaskType> {
    let mut tasks = Vec::new();

    // Create
    tasks.push(TaskType::CommandWait(
        PathBuf::from(format!("{system32}/bcdboot.exe")),
        vec![
            format!("{letter_os}:\\Windows"),
            String::from("/s"),
            format!("{letter_boot}:"),
            String::from("/f"),
            String::from(match table_type {
                PartitionTableType::Guid => "UEFI",
                PartitionTableType::Legacy => "BIOS",
            }),
        ],
    ));

    // Update boot sector (for legacy setups)
    if *table_type == PartitionTableType::Legacy {
        tasks.push(TaskType::CommandWait(
            PathBuf::from(format!("{system32}/bootsect.exe")),
            vec![
                String::from("/nt60"),
                format!("{letter_boot}:"),
                String::from("/force"),
                String::from("/mbr"),
            ],
        ));
    }

    // Lock in safe mode (if needed)
    if safe_mode == SafeMode::Enable {
        tasks.push(
            set_mode(letter_boot, &SafeMode::Enable, system32, table_type)
                .expect("Failed to create set_mode task."),
        );
    }

    // Done
    tasks
}

pub fn inject_driver(driver: &Driver, letter_os: &str, system32: &str) -> Result<TaskType> {
    //if let Some(driver_path_str) = driver.path.to_str() {
    let driver_path = driver.path.to_str().unwrap();
    Ok(TaskType::CommandWait(
        PathBuf::from(format!("{system32}/dism.exe")),
        vec![
            format!("/image:{letter_os}:\\"),
            String::from("/add-driver"),
            format!("/driver:{driver_path}"),
            String::from("/recurse"),
        ],
    ))
}

pub fn set_mode(
    letter_boot: &str,
    mode: &SafeMode,
    system32: &str,
    table_type: &PartitionTableType,
) -> Result<TaskType> {
    let bcd_path = match table_type {
        PartitionTableType::Guid => {
            format!("{letter_boot}:\\EFI\\Microsoft\\Boot\\BCD")
        }
        PartitionTableType::Legacy => {
            format!("{letter_boot}:\\Boot\\BCD")
        }
    };

    // Build CommandWait
    let mut cmd_args = vec![String::from("/store"), bcd_path];
    match mode {
        SafeMode::Disable => {
            cmd_args.push(String::from("/deletevalue"));
            cmd_args.push(String::from("{default}"));
            cmd_args.push(String::from("safeboot"));
        }
        SafeMode::Enable => {
            cmd_args.push(String::from("/set"));
            cmd_args.push(String::from("{default}"));
            cmd_args.push(String::from("safeboot"));
            cmd_args.push(String::from("minimal"));
        }
    }
    Ok(TaskType::CommandWait(
        PathBuf::from(format!("{system32}/bcdedit.exe")),
        cmd_args,
    ))
}