use figment::{providers::Serialized, value, Figment, Metadata, Profile, Provider};
use serde::{Deserialize, Serialize};

use crate::search;

#[derive(Debug, PartialEq, Eq, Clone, Default, Serialize, Deserialize)]
pub struct Config {
    pub(crate) paths: Vec<search::entry::Config>,
}

impl Config {
    // Extract the configuration from any `Provider`
    pub fn extract<T: Provider>(provider: T) -> figment::error::Result<Config> {
        Figment::from(provider).extract()
    }

    // Provide a default provider, a `Figment`.
    pub fn figment() -> Figment {
        Figment::from(Config::default())
    }
}

impl Provider for Config {
    fn metadata(&self) -> Metadata {
        Metadata::named("Projectr config")
    }

    fn data(&self) -> figment::error::Result<value::Map<Profile, value::Dict>> {
        Serialized::defaults(self).data()
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use figment::providers::{Format, Serialized, Toml};
    use pretty_assertions::assert_eq;

    #[test]
    fn test_extract() {
        figment::Jail::expect_with(|jail| {
            jail.create_file(
                "file.toml",
                r#"
                paths = [
                    "/path/to/projects",
                    { path = "/path/to/other_projects", recurse = 1, hidden = true },
                    { path = "/path/to/another_project", recurse = 0 },
                ]
                "#,
            )?;

            let config: Config = Figment::from(Serialized::defaults(Config::default()))
                .merge(Toml::file("file.toml"))
                .extract()?;

            assert_eq!(
                config,
                Config {
                    paths: Vec::from([
                        search::entry::Config {
                            path_buf: "/path/to/projects".into(),
                            hidden: false,
                            max_depth: None,
                            ..Default::default()
                        },
                        search::entry::Config {
                            path_buf: "/path/to/other_projects".into(),
                            hidden: true,
                            max_depth: Some(1),
                            ..Default::default()
                        },
                        search::entry::Config {
                            path_buf: "/path/to/another_project".into(),
                            hidden: false,
                            max_depth: Some(0),
                            ..Default::default()
                        },
                    ]),
                }
            );

            Ok(())
        });
    }
}