mod fill_sparse;
mod grid_errors;
mod object_placement;
mod player_placement;
mod portal_placement;
mod pushers;
mod round_trip;
mod spinners;
mod transporters;

use crate::board::Board;
use crate::map_file::MapFile;

fn load_board(toml: &str) -> Board {
    let mf: MapFile = toml::from_str(toml).expect("parse toml");
    Board::try_from(mf).expect("convert to board")
}

/// Builds the `[grid]` block: a triple-quoted `content` grid plus an inline
/// `palette` table. Each palette entry is `(char_key, inline-body)` where the
/// body is the inside of the entry's `{ ... }` (e.g. `kind = "wall"`).
fn grid(content: &str, palette: &[(&str, &str)]) -> String {
    let pal = palette
        .iter()
        .map(|(k, body)| format!("\"{k}\" = {{ {body} }}"))
        .collect::<Vec<_>>()
        .join(", ");
    format!("\n[grid]\ncontent = \"\"\"\n{content}\n\"\"\"\npalette = {{ {pal} }}\n")
}

/// Wraps a `[map]` header of the given size around the single `[grid]` block
/// (produced by [`grid`]).
fn map(width: usize, height: usize, grid_block: &str) -> String {
    format!("[map]\nname = \"Test\"\nwidth = {width}\nheight = {height}\n{grid_block}")
}

/// A 3×1 single-layer map: an `empty`/`wall` palette plus one `object` entry
/// placed by char `ch` (cyan `@` glyph), with `extra` appended to its body. The
/// player is placed at the far-right cell via a second char where room allows;
/// callers that need the player elsewhere build the map directly.
fn map_3x1_object(grid_str: &str, ch: &str, extra: &str) -> String {
    let body = if extra.is_empty() {
        "kind = \"object\", tile = 64, fg = \"#00FFFF\", bg = \"#000000\"".to_string()
    } else {
        format!("kind = \"object\", tile = 64, fg = \"#00FFFF\", bg = \"#000000\", {extra}")
    };
    map(
        3,
        1,
        &grid(
            grid_str,
            &[
                (" ", "kind = \"empty\""),
                (".", "kind = \"empty\""),
                (
                    "#",
                    "kind = \"wall\", tile = 35, fg = \"#808080\", bg = \"#606060\"",
                ),
                ("@", "kind = \"player\""),
                (ch, &body),
            ],
        ),
    )
}