use serde::{Deserialize, Serialize};
use serde_repr::{Deserialize_repr, Serialize_repr};

use crate::{PartialResultParams, Range, TextDocumentPositionParams, WorkDoneProgressParams};

#[derive(Debug, Eq, PartialEq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct DocumentHighlightParams {
    #[serde(flatten)]
    pub text_document_position_params: TextDocumentPositionParams,

    #[serde(flatten)]
    pub work_done_progress_params: WorkDoneProgressParams,

    #[serde(flatten)]
    pub partial_result_params: PartialResultParams,
}

/// A document highlight is a range inside a text document which deserves
/// special attention. Usually a document highlight is visualized by changing
/// the background color of its range.
#[derive(Debug, Eq, PartialEq, Clone, Deserialize, Serialize)]
pub struct DocumentHighlight {
    /// The range this highlight applies to.
    pub range: Range,

    /// The highlight kind, default is DocumentHighlightKind.Text.
    #[serde(skip_serializing_if = "Option::is_none")]
    pub kind: Option<DocumentHighlightKind>,
}

/// A document highlight kind.
#[derive(Debug, Eq, PartialEq, Copy, Clone, Deserialize_repr, Serialize_repr)]
#[repr(u8)]
pub enum DocumentHighlightKind {
    /// A textual occurrance.
    Text = 1,

    /// Read-access of a symbol, like reading a variable.
    Read = 2,

    /// Write-access of a symbol, like writing to a variable.
    Write = 3,
}
