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pub mod definition;
pub mod visitor;
pub mod xml_writer;

use serde::{Deserialize, Serialize};
use serde_json::Value;
use std::collections::BTreeMap;

pub enum DataValue {
    String { kind: String, value: String },
    Image(Image),
    Json(Value),
}

#[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
pub enum Image {
    Png(String),
    Svg(String),
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub enum Node {
    Plain(String),
    Compound(Compound),
    Script(Script),
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Script {
    pub id: String,
    pub src: String,
    pub elements: Vec<Vec<Node>>,
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Compound {
    pub type_id: String,
    pub id: Option<String>,
    pub attributes: Vec<(Option<String>, Attribute)>,
    pub children: Vec<Node>,
}

impl Compound {
    pub fn new<S: Into<String>, B: IntoIterator<Item = (Option<String>, Attribute)>>(
        type_id: S,
        id: Option<&str>,
        attributes: B,
        children: Vec<Node>,
    ) -> Self {
        Self {
            type_id: type_id.into(),
            id: id.map(String::from),
            attributes: attributes.into_iter().collect(),
            children,
        }
    }

    pub fn new_with_children<S: Into<String>>(
        type_id: S,
        id: Option<&str>,
        children: Vec<Node>,
    ) -> Self {
        Self::new(type_id, id, BTreeMap::new(), children)
    }

    pub fn new_with_attributes<
        S: Into<String>,
        B: IntoIterator<Item = (Option<String>, Attribute)>,
    >(
        type_id: S,
        id: Option<&str>,
        attributes: B,
    ) -> Self {
        Self {
            type_id: type_id.into(),
            id: id.map(String::from),
            attributes: attributes.into_iter().collect(),
            children: vec![],
        }
    }

    pub fn new_empty<S: Into<String>>(type_id: S, id: Option<&str>) -> Self {
        Self {
            type_id: type_id.into(),
            id: id.map(String::from),
            attributes: Vec::new(),
            children: vec![],
        }
    }
}

impl Node {
    pub fn get_compound(&self) -> Option<&Compound> {
        if let Node::Compound(c) = self {
            Some(c)
        } else {
            None
        }
    }

    pub fn get_plain(&self) -> Option<&String> {
        if let Node::Plain(s) = self {
            Some(s)
        } else {
            None
        }
    }
}

#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
pub enum Attribute {
    Int(i64),
    Float(f64),
    String(String),
    Enum(String),
    Compound(Vec<Node>),
    Flag,
}

impl Attribute {
    pub fn get_string(&self) -> &str {
        if let Attribute::String(s) = self {
            s
        } else {
            panic!()
        }
    }
}

// #[derive(Deserialize)]
// pub struct NodeTypeDef {
//     pub type_id: String,
//     pub attributes: Option<Vec<AttributeDef>>,
//     pub children: Option<Vec<NodeChildSpec>>,
// }
//
// #[derive(Deserialize)]
// pub struct NodeChildSpec {
//     pub type_: ChildType,
//     pub rule: ChildRule,
// }
//
// #[derive(Deserialize)]
// pub enum ChildType {
//     Any,
//     Is(String),
//     OneOf(Vec<ChildType>),
// }
//
// #[derive(Deserialize)]
// pub enum ChildRule {
//     One,
//     OneOrMany,
//     ZeroOrMany,
//     ZeroOrOne,
//     Exactly(usize),
// }
//
// #[derive(Deserialize)]
// pub struct AttributeDef {
//     pub name: String,
//     pub optional: bool,
//     pub data_type: DataType,
// }
//
// #[derive(Deserialize)]
// pub enum DataType {
//     Int,
//     Float,
//     String,
//     Enum(Vec<String>),
//     Flag,
// }