ostool-server 0.1.4

Server for managing development boards, serial sessions, and TFTP artifacts
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use std::collections::{BTreeMap, BTreeSet};

use crate::config::BoardConfig;

#[derive(Debug, Clone, PartialEq, Eq)]
pub enum BoardAllocationStatus {
    BoardTypeNotFound,
    NoAvailableBoard,
}

pub fn allocate_board(
    boards: &BTreeMap<String, BoardConfig>,
    leased_boards: &BTreeSet<String>,
    board_type: &str,
    required_tags: &[String],
) -> Result<BoardConfig, BoardAllocationStatus> {
    let matching_boards = boards
        .values()
        .filter(|board| !board.disabled)
        .filter(|board| board.board_type == board_type)
        .filter(|board| required_tags.iter().all(|tag| board.tags.contains(tag)))
        .collect::<Vec<_>>();

    if matching_boards.is_empty() {
        let board_type_exists = boards
            .values()
            .any(|board| !board.disabled && board.board_type == board_type);
        return Err(if board_type_exists {
            BoardAllocationStatus::NoAvailableBoard
        } else {
            BoardAllocationStatus::BoardTypeNotFound
        });
    }

    matching_boards
        .into_iter()
        .find(|board| !leased_boards.contains(&board.id))
        .cloned()
        .ok_or(BoardAllocationStatus::NoAvailableBoard)
}