/*
    Hurry Curry! - a game about cooking
    Copyright (C) 2025 Hurry Curry! Contributors

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, version 3 of the License only.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

*/

use anyhow::Result;
use hurrycurry_protocol::{Gamedata, Message, book::Diagram};
use std::fmt::Write;

pub fn diagram_dot(data: &Gamedata, diagram: &Diagram) -> Result<String> {
    let mut out = String::new();
    writeln!(out, "digraph {{")?;
    for (i, n) in diagram.nodes.iter().enumerate() {
        let mut attrs = Vec::new();
        if let Some(color) = &n.color {
            attrs.push(format!("style=filled"));
            attrs.push(format!("fillcolor={color:?}"));
            attrs.push(format!("color={color:?}"));
        }
        if let Some(shape) = &n.shape {
            attrs.push(format!("shape={shape}"));
        }
        writeln!(
            out,
            "k{i} [label=\"{}\" {}]",
            message_str(data, &n.label),
            attrs.join(" ")
        )?;
    }
    for edge in &diagram.edges {
        writeln!(out, "k{} -> k{}", edge.src, edge.dst)?;
    }
    writeln!(out, "}}")?;
    Ok(out)
}

fn message_str(data: &Gamedata, message: &Message) -> String {
    match message {
        Message::Translation { .. } => todo!(),
        Message::Text(x) => x.to_owned(),
        Message::Item(item_index) => data.item_name(*item_index).to_string(),
        Message::Tile(tile_index) => data.tile_name(*tile_index).to_string(),
    }
}