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pub mod data_services;
pub mod reference;

use crate::xml::{default_xml_namespace_edmx, default_xml_namespace_m, default_xml_namespace_sap};
use data_services::DataServices;
use reference::Reference;
use serde::{Deserialize, Serialize};

#[derive(Debug, Serialize, Deserialize)]
pub enum EdmxVersion {
    #[serde(rename = "1.0")]
    V1_0,

    #[serde(rename = "2.0")]
    V2_0,
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/// Represents the top-level Entity Data Model, or `<edmx:Edmx>` tag in an OData metadata document
///
/// # Child Nodes
/// `0:n edmx:Reference`<br>
/// `1:1 edmx:DataServices`
///
/// ***WARNING:***<br>`quick-xml` strips the namespace from XML tag names, but not attribute names!
///
/// Consequently, tag names such as `<edmx:DataServices>` and `<atom:link>` will appear simply as `<DataServices>` and
/// `<link>` etc, but attribute names such as `sap:schema-version` will appear without modification
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "PascalCase")]
pub struct Edmx {
    #[serde(rename = "@Version")]
    pub version: EdmxVersion,

    #[serde(rename = "@xmlns:edmx", default = "default_xml_namespace_edmx")]
    pub namespace_edmx: String,

    #[serde(rename = "@xmlns:m", default = "default_xml_namespace_m")]
    pub namespace_m: String,

    #[serde(rename = "@xmlns:sap", default = "default_xml_namespace_sap")]
    pub namespace_sap: String,

    #[serde(rename = "Reference")]
    pub references: Option<Vec<Reference>>,

    pub data_services: DataServices,
}

impl std::str::FromStr for Edmx {
    type Err = quick_xml::DeError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        quick_xml::de::from_str(s)
    }
}