use collections::BTreeMap;
use language::LanguageServerName;
use serde::{Deserialize, Serialize};
use std::{path::PathBuf, sync::Arc};

/// This is the old version of the extension manifest, from when it was `extension.json`.
#[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
pub struct OldExtensionManifest {
    pub name: String,
    pub version: Arc<str>,

    #[serde(default)]
    pub description: Option<String>,
    #[serde(default)]
    pub repository: Option<String>,
    #[serde(default)]
    pub authors: Vec<String>,

    #[serde(default)]
    pub themes: BTreeMap<Arc<str>, PathBuf>,
    #[serde(default)]
    pub languages: BTreeMap<Arc<str>, PathBuf>,
    #[serde(default)]
    pub grammars: BTreeMap<Arc<str>, PathBuf>,
}

#[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
pub struct ExtensionManifest {
    pub id: Arc<str>,
    pub name: String,
    pub version: Arc<str>,

    #[serde(default)]
    pub description: Option<String>,
    #[serde(default)]
    pub repository: Option<String>,
    #[serde(default)]
    pub authors: Vec<String>,
    #[serde(default)]
    pub lib: LibManifestEntry,

    #[serde(default)]
    pub themes: Vec<PathBuf>,
    #[serde(default)]
    pub languages: Vec<PathBuf>,
    #[serde(default)]
    pub grammars: BTreeMap<Arc<str>, GrammarManifestEntry>,
    #[serde(default)]
    pub language_servers: BTreeMap<LanguageServerName, LanguageServerManifestEntry>,
}

#[derive(Clone, Default, PartialEq, Eq, Debug, Deserialize, Serialize)]
pub struct LibManifestEntry {
    pub kind: Option<ExtensionLibraryKind>,
}

#[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
pub enum ExtensionLibraryKind {
    Rust,
}

#[derive(Clone, Default, PartialEq, Eq, Debug, Deserialize, Serialize)]
pub struct GrammarManifestEntry {
    pub repository: String,
    #[serde(alias = "commit")]
    pub rev: String,
}

#[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
pub struct LanguageServerManifestEntry {
    pub language: Arc<str>,
}