aether-mcp-servers 0.8.6

use schemars::JsonSchema;
use serde::{Deserialize, Serialize};

use super::common::TaskSummary;
use crate::tasks::task_store::TaskStore;
use crate::tasks::types::{Task, TaskStatus};

/// Input for the `task_list` tool
#[derive(Debug, Clone, Default, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct TaskListInput {
    /// Filter by assignee
    #[serde(default)]
    pub assignee: Option<String>,

    /// Filter by status: pending, `in_progress`, completed, or blocked
    #[serde(default)]
    pub status: Option<TaskStatus>,

    /// List all tasks in a specific tree (by root task ID)
    #[serde(default, alias = "tree_id")]
    pub tree_id: Option<String>,

    /// Only return tasks that are ready to start (pending with all deps completed)
    #[serde(default, alias = "ready_only")]
    pub ready_only: Option<bool>,
}

/// Output for the `task_list` tool
#[derive(Debug, Clone, Serialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct TaskListOutput {
    /// Matching tasks
    pub tasks: Vec<TaskSummary>,
}

pub fn execute_task_list(input: &TaskListInput, store: &TaskStore) -> TaskListOutput {
    let tasks = store.tasks().filter(|task| input.matches(task, store)).map(TaskSummary::from).collect();
    TaskListOutput { tasks }
}

impl TaskListInput {
    fn matches(&self, task: &Task, store: &TaskStore) -> bool {
        self.assignee.as_ref().is_none_or(|assignee| task.assignee.as_ref() == Some(assignee))
            && self.status.is_none_or(|status| task.status == status)
            && self.tree_id.as_deref().is_none_or(|tree_id| task.id.root().as_str() == tree_id)
            && (!self.ready_only.unwrap_or(false) || store.is_ready(task))
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::tasks::TaskUpdate;
    use crate::testing::TestTaskStore;

    #[test]
    fn test_list_all_tasks() {
        let mut tasks = TestTaskStore::new();

        let root = tasks.root_task("Root");
        tasks.subtask(&root.id, "Subtask 1");
        tasks.subtask(&root.id, "Subtask 2");

        let output = execute_task_list(&TaskListInput::default(), tasks.store());

        assert_eq!(output.tasks.len(), 3);
    }

    #[test]
    fn test_list_by_tree() {
        let mut tasks = TestTaskStore::new();

        let root1 = tasks.root_task("Root 1");
        tasks.subtask(&root1.id, "Subtask 1.1");

        let root2 = tasks.root_task("Root 2");
        tasks.subtask(&root2.id, "Subtask 2.1");
        tasks.subtask(&root2.id, "Subtask 2.2");

        let output = execute_task_list(
            &TaskListInput { tree_id: Some(root2.id.to_string()), ..Default::default() },
            tasks.store(),
        );

        assert_eq!(output.tasks.len(), 3);
    }

    #[test]
    fn test_list_by_assignee() {
        let mut tasks = TestTaskStore::new();

        let root = tasks.root_task("Root");
        let sub1 = tasks.subtask(&root.id, "Task 1");
        let sub2 = tasks.subtask(&root.id, "Task 2");

        tasks
            .store_mut()
            .update(&sub1.id, TaskUpdate { assignee: Some("worker-1".to_string()), ..Default::default() })
            .unwrap();
        tasks
            .store_mut()
            .update(&sub2.id, TaskUpdate { assignee: Some("worker-2".to_string()), ..Default::default() })
            .unwrap();

        let output = execute_task_list(
            &TaskListInput { assignee: Some("worker-1".to_string()), ..Default::default() },
            tasks.store(),
        );

        assert_eq!(output.tasks.len(), 1);
        assert_eq!(output.tasks[0].assignee, Some("worker-1".to_string()));
    }

    #[test]
    fn test_list_by_status() {
        let mut tasks = TestTaskStore::new();

        let root = tasks.root_task("Root");
        let sub = tasks.subtask(&root.id, "Subtask");

        tasks
            .store_mut()
            .update(&sub.id, TaskUpdate { status: Some(TaskStatus::InProgress), ..Default::default() })
            .unwrap();

        let output = execute_task_list(
            &TaskListInput { status: Some(TaskStatus::InProgress), ..Default::default() },
            tasks.store(),
        );

        assert_eq!(output.tasks.len(), 1);
        assert_eq!(output.tasks[0].status, TaskStatus::InProgress);
    }

    #[test]
    fn assignee_and_status_filters_combine() {
        let mut tasks = TestTaskStore::new();
        let root = tasks.root_task("Root");
        for (title, status) in [("Started", TaskStatus::InProgress), ("Queued", TaskStatus::Pending)] {
            let task = tasks.subtask(&root.id, title);
            let update =
                TaskUpdate { assignee: Some("worker-1".to_string()), status: Some(status), ..Default::default() };
            tasks.store_mut().update(&task.id, update).unwrap();
        }

        let input = TaskListInput {
            assignee: Some("worker-1".to_string()),
            status: Some(TaskStatus::InProgress),
            ..Default::default()
        };
        let titles: Vec<_> = execute_task_list(&input, tasks.store()).tasks.into_iter().map(|t| t.title).collect();

        assert_eq!(titles, ["Started"]);
    }

    #[test]
    fn lists_tasks_in_id_order_with_numeric_subtask_indices() {
        let mut tasks = TestTaskStore::new();
        let root = tasks.root_task("Root");
        let subtasks: Vec<_> = (1..=11).map(|n| tasks.subtask(&root.id, &format!("Step {n}"))).collect();

        let output = execute_task_list(&TaskListInput::default(), tasks.store());

        let ids: Vec<_> = output.tasks.into_iter().map(|t| t.id).collect();
        let expected: Vec<_> = std::iter::once(&root).chain(&subtasks).map(|t| t.id.to_string()).collect();
        assert_eq!(ids, expected);
    }

    #[test]
    fn test_list_ready_only() {
        let mut tasks = TestTaskStore::new();

        let root = tasks.root_task("Root");
        let sub1 = tasks.subtask(&root.id, "Subtask 1");
        let sub2 = tasks.subtask(&root.id, "Subtask 2");

        tasks
            .store_mut()
            .update(&sub2.id, TaskUpdate { deps: Some(vec![sub1.id.clone()]), ..Default::default() })
            .unwrap();

        let output = execute_task_list(&TaskListInput { ready_only: Some(true), ..Default::default() }, tasks.store());

        assert_eq!(output.tasks.len(), 2);

        tasks
            .store_mut()
            .update(
                &sub1.id,
                TaskUpdate {
                    status: Some(TaskStatus::Completed),
                    summary: Some("done".to_string()),
                    ..Default::default()
                },
            )
            .unwrap();

        let output = execute_task_list(&TaskListInput { ready_only: Some(true), ..Default::default() }, tasks.store());

        assert_eq!(output.tasks.len(), 2);
        let ready_ids: Vec<_> = output.tasks.iter().map(|t| t.id.as_str()).collect();
        assert!(ready_ids.contains(&sub2.id.as_str()));
    }

    #[test]
    fn test_list_empty() {
        let tasks = TestTaskStore::new();

        let output = execute_task_list(&TaskListInput::default(), tasks.store());

        assert_eq!(output.tasks.len(), 0);
    }

    #[test]
    fn test_list_nonexistent_tree() {
        let tasks = TestTaskStore::new();

        let output = execute_task_list(
            &TaskListInput { tree_id: Some("at-nonexistent".to_string()), ..Default::default() },
            tasks.store(),
        );

        assert_eq!(output.tasks.len(), 0);
    }
}