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#![deny(clippy::all)]

#[macro_use]
extern crate napi_derive;

use log::LevelFilter;
use std::collections::HashMap;
use std::path::PathBuf;

use depckeck_rs_core::checker::Checker;
use depckeck_rs_core::checker_result::CheckerResult;
use depckeck_rs_core::config;

#[napi(object)]
pub struct Options {
    pub ignore_bin_package: Option<bool>,
    pub ignore_patterns: Option<Vec<String>>,
    pub ignore_matches: Option<Vec<String>>,
    pub skip_missing: Option<bool>,
    pub ignore_path: Option<String>,
    pub verbose: Option<u32>,
}

#[napi(object)]
pub struct DepcheckResult {
    pub using_dependencies: HashMap<String, Vec<String>>,
    pub missing_dependencies: HashMap<String, Vec<String>>,
    pub unused_dependencies: Vec<String>,
    pub unused_dev_dependencies: Vec<String>,
}

impl From<CheckerResult> for DepcheckResult {
    fn from(result: CheckerResult) -> Self {
        let CheckerResult {
            using_dependencies,
            missing_dependencies,
            unused_dependencies,
            unused_dev_dependencies,
        } = result;

        let using_dependencies = using_dependencies
            .into_iter()
            .map(|(dependency, files)| (dependency, files.into_iter().collect()))
            .collect();

        let missing_dependencies = missing_dependencies
            .into_iter()
            .map(|(dependency, files)| (dependency, files.into_iter().collect()))
            .collect();

        let unused_dependencies = unused_dependencies.into_iter().collect();
        let unused_dev_dependencies = unused_dev_dependencies.into_iter().collect();

        DepcheckResult {
            using_dependencies,
            missing_dependencies,
            unused_dependencies,
            unused_dev_dependencies,
        }
    }
}

#[napi]
pub fn depcheck(path: String, options: Option<Options>) -> DepcheckResult {
    let path = PathBuf::from(path);

    let mut config = config::Config::new(path);

    if let Some(options) = options {
        if let Some(ignore_bin_package) = options.ignore_bin_package {
            config = config.with_ignore_bin_package(ignore_bin_package);
        }

        if let Some(ignore_patterns) = options.ignore_patterns {
            config = config.with_ignore_patterns(ignore_patterns);
        }

        if let Some(ignore_matches) = options.ignore_matches {
            config = config.with_ignore_matches(ignore_matches);
        }

        if let Some(skip_missing) = options.skip_missing {
            config = config.with_skip_missing(skip_missing);
        }

        let verbose = options.verbose.unwrap_or(0);
        let verbose = match verbose {
            0 => LevelFilter::Error,
            1 => LevelFilter::Warn,
            2 => LevelFilter::Info,
            3 => LevelFilter::Debug,
            4..=u32::MAX => LevelFilter::Trace,
        };
        env_logger::Builder::new().filter_level(verbose).init();

        let ignore_path = options.ignore_path.map(PathBuf::from);
        config = config.with_ignore_path(ignore_path);
    }

    let result = Checker::new(config).check_package().unwrap();

    result.into()
}