use collections::HashMap;
use gpui::AppContext;
use schemars::JsonSchema;
use serde::{Deserialize, Serialize};
use settings::Settings;
use std::sync::Arc;

#[derive(Clone, Default, Serialize, Deserialize, JsonSchema)]
pub struct ProjectSettings {
    /// Configuration for language servers.
    ///
    /// The following settings can be overridden for specific language servers:
    /// - initialization_options
    /// To override settings for a language, add an entry for that language server's
    /// name to the lsp value.
    /// Default: null
    #[serde(default)]
    pub lsp: HashMap<Arc<str>, LspSettings>,

    /// Configuration for Git-related features
    #[serde(default)]
    pub git: GitSettings,

    /// Completely ignore files matching globs from `file_scan_exclusions`
    ///
    /// Default: [
    ///   "**/.git",
    ///   "**/.svn",
    ///   "**/.hg",
    ///   "**/CVS",
    ///   "**/.DS_Store",
    ///   "**/Thumbs.db",
    ///   "**/.classpath",
    ///   "**/.settings"
    /// ]
    #[serde(default)]
    pub file_scan_exclusions: Option<Vec<String>>,

    /// Treat the files matching these globs as `.env` files.
    /// Default: [ "**/.env*" ]
    pub private_files: Option<Vec<String>>,
}

#[derive(Copy, Clone, Debug, Default, Serialize, Deserialize, JsonSchema)]
pub struct GitSettings {
    /// Whether or not to show the git gutter.
    ///
    /// Default: tracked_files
    pub git_gutter: Option<GitGutterSetting>,
    pub gutter_debounce: Option<u64>,
}

#[derive(Clone, Copy, Debug, Default, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum GitGutterSetting {
    /// Show git gutter in tracked files.
    #[default]
    TrackedFiles,
    /// Hide git gutter
    Hide,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub struct LspSettings {
    pub initialization_options: Option<serde_json::Value>,
}

impl Settings for ProjectSettings {
    const KEY: Option<&'static str> = None;

    type FileContent = Self;

    fn load(
        default_value: &Self::FileContent,
        user_values: &[&Self::FileContent],
        _: &mut AppContext,
    ) -> anyhow::Result<Self> {
        Self::load_via_json_merge(default_value, user_values)
    }
}