use std::{fs::File, io::Read};

use crate::Error;

use hard_xml::{XmlRead, XmlWrite};
use serde::{Deserialize, Serialize};
use strum::EnumString;

// start with the super POM idiot.

#[derive(Debug, Clone, Deserialize, Serialize, XmlRead, XmlWrite)]
#[xml(tag = "project")]
pub struct Project {
    #[xml(attr = "xmlns")]
    xmlns: String,
    #[xml(attr = "xlmns:xsi")]
    xmlns_xsi: String,
    #[xml(attr = "xsi:schemaLocation")]
    xsi_schema_location: String,

    #[xml(flatten_text = "modelVersion")]
    model_version: semver::Version,

    #[xml(flatten_text = "groupId")]
    group_id: String,

    #[xml(flatten_text = "artifactId")]
    artifact_id: String,

    #[xml(flatten_text = "version")]
    version: String,

    #[xml(flatten_text = "packaging")]
    packaging: String,

    #[xml(child = "properties")]
    properties: Properties,

    #[xml(child = "dependencyManagement")]
    dependency_management: DependencyManagement,

    #[xml(child = "dependencies")]
    dependencies: Vec<Dependency>,
}

#[derive(Debug, Clone, Deserialize, Serialize, XmlRead, XmlWrite)]
#[xml(tag = "properties")]
pub struct Properties {
    #[xml(flatten_text = "maven.compiler.source")]
    source: String,

    #[xml(flatten_text = "maven.compiler.target")]
    target: String,
    // lwjgl.version
    // lwjgl.natives
}

#[derive(Debug, Clone, Deserialize, Serialize, XmlRead, XmlWrite)]
#[xml(tag = "dependencyManagement")]
pub struct DependencyManagement {
    #[xml(child = "dependencies")]
    dependencies: Vec<Dependency>,
}

#[derive(Debug, Clone, Deserialize, Serialize, XmlRead, XmlWrite)]
#[xml(tag = "dependency")]
pub struct Dependency {
    #[xml(flatten_text = "groupId")]
    group_id: String,

    #[xml(flatten_text = "artifactId")]
    artifact_id: String,

    #[xml(flatten_text = "version")]
    version: semver::Version,

    #[xml(flatten_text = "scope")]
    scope: String,

    #[xml(flatten_text = "type")]
    type_: String,

    #[xml(flatten_text = "optional")]
    optional: bool,

    #[xml(child = "exclusions")]
    exclusions: Vec<Exclusion>,
}

#[derive(Debug, Clone, Deserialize, Serialize, XmlRead, XmlWrite)]
#[xml(tag = "exclusion")]
pub struct Exclusion {
    #[xml(flatten_text = "groupId")]
    group_id: String,

    #[xml(flatten_text = "artifactId")]
    artifact_id: String,
}

#[derive(Debug, Clone, Copy, Default, Deserialize, Serialize, EnumString)]
#[strum(serialize_all = "camelCase")]
pub enum Packaging {
    #[default]
    Pom,
    Jar,
}

impl TryFrom<File> for Project {
    type Error = Error;

    fn try_from(value: File) -> Result<Self, Self::Error> {
        let mut value = value;
        let mut buf = String::new();
        value.read_to_string(&mut buf)?;

        Ok(Project::from_str(&buf)?)
    }
}