commit 5d9bac5cd1a956a6ec296d60d62835f4be7572e8
Author: David Rousselie <david@rousselie.name>
Date:   Thu Dec 23 10:10:59 2021 +0000

    Initial commit

diff --git a/.gitignore b/.gitignore
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index 0000000..ea8c4bf
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diff --git a/Cargo.lock b/Cargo.lock
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+version = "0.7.0+zstd.1.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9428752481d8372e15b1bf779ea518a179ad6c771cca2d2c60e4fbff3cc2cd52"
+dependencies = [
+ "zstd-safe",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "3.1.0+zstd.1.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aa1926623ad7fe406e090555387daf73db555b948134b4d73eac5eb08fb666d"
+dependencies = [
+ "libc",
+ "zstd-sys",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "1.5.0+zstd.1.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e6c094340240369025fc6b731b054ee2a834328fa584310ac96aa4baebdc465"
+dependencies = [
+ "cc",
+ "libc",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..8db8dbe
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,30 @@
+[package]
+name = "contextswitch"
+version = "0.1.0"
+edition = "2021"
+authors = ["David Rousselie <david@rousselie.name>"]
+
+[lib]
+path = "src/lib.rs"
+
+[[bin]]
+path = "src/main.rs"
+name = "contextswitch"
+
+[dependencies]
+actix-web = "=4.0.0-beta.10"
+actix-http = "=3.0.0-beta.11"
+serde = "1.0.130"
+serde_json = "1.0.71"
+uuid = { version = "0.8.2", features = ["serde"] }
+chrono = { version = "0.4.19", features = ["serde"] }
+mktemp = "0.4.1"
+configparser = "3.0.0"
+env_logger = "0.9.0"
+dotenv = "0.15.0"
+listenfd = "0.3.5"
+
+[dev-dependencies]
+actix-rt = "2"
+reqwest = "0.11.6"
+tokio = "1"
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a399311
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      "License" shall mean the terms and conditions for use, reproduction,
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+      outstanding shares, or (iii) beneficial ownership of such entity.
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+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+      appropriateness of using or redistributing the Work and assume any
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2022 David Rousselie
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..6d39f19
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+# contextswitch
+
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..19e1f4f
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,82 @@
+use actix_web::{dev::Server, middleware::Logger, web, App, HttpResponse, HttpServer};
+use chrono::{DateTime, Utc};
+use listenfd::ListenFd;
+use serde::{Deserialize, Serialize};
+use std::io::Error;
+use std::net::TcpListener;
+use uuid::Uuid;
+
+pub mod taskwarrior;
+
+#[derive(Deserialize)]
+struct TaskQuery {
+    filter: String,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+pub struct Task {
+    pub uuid: Uuid,
+    pub id: u32,
+    #[serde(with = "taskwarrior::tw_date_format")]
+    pub entry: DateTime<Utc>,
+    #[serde(with = "taskwarrior::tw_date_format")]
+    pub modified: DateTime<Utc>,
+    pub status: taskwarrior::Status,
+    pub description: String,
+    pub urgency: f64,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "taskwarrior::opt_tw_date_format"
+    )]
+    pub due: Option<DateTime<Utc>>,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "taskwarrior::opt_tw_date_format"
+    )]
+    pub end: Option<DateTime<Utc>>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub parent: Option<Uuid>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub project: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub recur: Option<taskwarrior::Recurrence>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub tags: Option<Vec<String>>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub contextswitch: Option<taskwarrior::ContextSwitchMetadata>,
+}
+
+async fn list_tasks(task_query: web::Query<TaskQuery>) -> Result<HttpResponse, Error> {
+    let tasks = taskwarrior::export(task_query.filter.split(' ').collect())?;
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&tasks)?))
+}
+
+async fn health_check() -> HttpResponse {
+    HttpResponse::Ok().finish()
+}
+
+pub fn run(listener: TcpListener) -> Result<Server, std::io::Error> {
+    let mut server = HttpServer::new(|| {
+        App::new()
+            .wrap(Logger::default())
+            .route("/ping", web::get().to(health_check))
+            .route("/tasks", web::get().to(list_tasks))
+    })
+    .keep_alive(60)
+    .shutdown_timeout(60);
+
+    let mut listenfd = ListenFd::from_env();
+
+    server = if let Some(fdlistener) = listenfd.take_tcp_listener(0)? {
+        server.listen(fdlistener)?
+    } else {
+        server.listen(listener)?
+    };
+
+    Ok(server.run())
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..3f341ce
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,22 @@
+extern crate dotenv;
+extern crate env_logger;
+extern crate listenfd;
+
+use contextswitch::run;
+use dotenv::dotenv;
+use std::env;
+use std::net::TcpListener;
+
+pub mod taskwarrior;
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    env::set_var("RUST_LOG", "actix_web=info");
+    env_logger::init();
+    dotenv().ok();
+
+    let port = env::var("PORT").unwrap_or("8000".to_string());
+
+    let listener = TcpListener::bind(format!("0.0.0.0:{}", port)).expect("Failed to bind port");
+    run(listener)?.await
+}
diff --git a/src/taskwarrior.rs b/src/taskwarrior.rs
new file mode 100644
index 0000000..0163247
--- /dev/null
+++ b/src/taskwarrior.rs
@@ -0,0 +1,146 @@
+use chrono::{DateTime, Utc};
+use serde::{de, Deserialize, Deserializer, Serialize};
+use serde_json;
+use std::io::Error;
+use std::process::Command;
+use std::str;
+use uuid::Uuid;
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "lowercase")]
+pub enum Recurrence {
+    Daily,
+    Weekly,
+    Monthly,
+    Yearly,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "lowercase")]
+pub enum Status {
+    Pending,
+    Completed,
+    Recurring,
+    Deleted,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+pub struct ContextSwitchMetadata {
+    pub test: u32,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+pub struct Task {
+    pub uuid: Uuid,
+    pub id: u32,
+    #[serde(with = "tw_date_format")]
+    pub entry: DateTime<Utc>,
+    #[serde(with = "tw_date_format")]
+    pub modified: DateTime<Utc>,
+    pub status: Status,
+    pub description: String,
+    pub urgency: f64,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "opt_tw_date_format"
+    )]
+    pub due: Option<DateTime<Utc>>,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "opt_tw_date_format"
+    )]
+    pub end: Option<DateTime<Utc>>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub parent: Option<Uuid>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub project: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub recur: Option<Recurrence>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub tags: Option<Vec<String>>,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        deserialize_with = "deserialize_from_json"
+    )]
+    pub contextswitch: Option<ContextSwitchMetadata>,
+}
+
+fn deserialize_from_json<'de, D>(deserializer: D) -> Result<Option<ContextSwitchMetadata>, D::Error>
+where
+    D: Deserializer<'de>,
+{
+    let s: String = Deserialize::deserialize(deserializer)?;
+    serde_json::from_str(&s).map_err(de::Error::custom)
+}
+
+pub mod tw_date_format {
+    use chrono::{DateTime, TimeZone, Utc};
+    use serde::{self, Deserialize, Deserializer, Serializer};
+
+    const FORMAT: &'static str = "%Y%m%dT%H%M%SZ";
+
+    pub fn serialize<S>(date: &DateTime<Utc>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let s = format!("{}", date.format(FORMAT));
+        serializer.serialize_str(&s)
+    }
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<DateTime<Utc>, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let s = String::deserialize(deserializer)?;
+        Utc.datetime_from_str(&s, FORMAT)
+            .map_err(serde::de::Error::custom)
+    }
+}
+
+pub mod opt_tw_date_format {
+    use chrono::{DateTime, TimeZone, Utc};
+    use serde::{self, Deserialize, Deserializer, Serializer};
+
+    const FORMAT: &'static str = "%Y%m%dT%H%M%SZ";
+
+    pub fn serialize<S>(date: &Option<DateTime<Utc>>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        if let Some(ref d) = *date {
+            return serializer.serialize_str(&d.format(FORMAT).to_string());
+        }
+
+        serializer.serialize_none()
+    }
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<Option<DateTime<Utc>>, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let s = String::deserialize(deserializer)?;
+        Utc.datetime_from_str(&s, FORMAT)
+            .map(Some)
+            .map_err(serde::de::Error::custom)
+    }
+}
+
+pub fn export(filters: Vec<&str>) -> Result<Vec<Task>, Error> {
+    let mut args = vec!["export"];
+    args.extend(filters);
+    let export_output = Command::new("task").args(args).output()?;
+
+    let tasks: Vec<Task> = serde_json::from_slice(&export_output.stdout)?;
+
+    return Ok(tasks);
+}
+
+pub fn add(add_args: Vec<&str>) -> Result<(), Error> {
+    let mut args = vec!["add"];
+    args.extend(add_args);
+    Command::new("task").args(args).output()?;
+    return Ok(());
+}
diff --git a/tests/health_check.rs b/tests/health_check.rs
new file mode 100644
index 0000000..ccf4f6a
--- /dev/null
+++ b/tests/health_check.rs
@@ -0,0 +1,16 @@
+pub mod test_helper;
+
+#[actix_rt::test]
+async fn health_check_works() {
+    let address = test_helper::spawn_app();
+    let client = reqwest::Client::new();
+
+    let response = client
+        .get(&format!("{}/ping", &address))
+        .send()
+        .await
+        .expect("Failed to execute request.");
+
+    assert!(response.status().is_success());
+    assert_eq!(Some(0), response.content_length());
+}
diff --git a/tests/task.rs b/tests/task.rs
new file mode 100644
index 0000000..1a68552
--- /dev/null
+++ b/tests/task.rs
@@ -0,0 +1,27 @@
+pub mod test_helper;
+
+use contextswitch::taskwarrior;
+use contextswitch::Task;
+
+#[actix_rt::test]
+async fn list_tasks() {
+    let task_data_path = test_helper::setup_tasks();
+    let address = test_helper::spawn_app();
+    let client = reqwest::Client::new();
+    taskwarrior::add(vec!["test1", "contextswitch:'{\"test\": 1}'"]).unwrap();
+
+    let response = client
+        .get(&format!("{}/tasks?filter=ls", &address))
+        .send()
+        .await
+        .expect("Failed to execute request.");
+
+    test_helper::clear_tasks(task_data_path);
+    let text_body = response.text_with_charset("utf-8").await.unwrap();
+    let tasks: Vec<Task> = serde_json::from_str(&text_body).unwrap();
+    assert_eq!(tasks.len(), 1);
+    assert_eq!(tasks[0].description, "test1");
+
+    let cs_metadata = tasks[0].contextswitch.as_ref().unwrap();
+    assert_eq!(cs_metadata.test, 1);
+}
diff --git a/tests/test_helper.rs b/tests/test_helper.rs
new file mode 100644
index 0000000..a56f312
--- /dev/null
+++ b/tests/test_helper.rs
@@ -0,0 +1,45 @@
+use configparser::ini::Ini;
+use mktemp::Temp;
+use std::env;
+use std::fs;
+use std::net::TcpListener;
+use std::path::PathBuf;
+
+pub fn spawn_app() -> String {
+    let listener = TcpListener::bind("127.0.0.1:0").expect("Failed to bind random port");
+    let port = listener.local_addr().unwrap().port();
+
+    let server = contextswitch::run(listener).expect("Failed to bind address");
+    let _ = tokio::spawn(server);
+    format!("http://127.0.0.1:{}", port)
+}
+
+pub fn setup_tasks() -> PathBuf {
+    let mut config = Ini::new();
+    config.setstr("default", "uda.contextswitch.type", Some("string"));
+    config.setstr(
+        "default",
+        "uda.contextswitch.label",
+        Some("Context Switch metadata"),
+    );
+    config.setstr("default", "uda.contextswitch.default", Some("{}"));
+
+    let tmp_dir = Temp::new_dir().unwrap();
+    let task_data_path = tmp_dir.to_path_buf();
+    config.setstr(
+        "default",
+        "data.location",
+        Some(task_data_path.to_str().unwrap()),
+    );
+
+    let taskrc_path = task_data_path.join(".taskrc");
+    config.write(taskrc_path.as_path()).unwrap();
+    env::set_var("TASKRC", taskrc_path.to_str().unwrap());
+
+    tmp_dir.release();
+    return task_data_path;
+}
+
+pub fn clear_tasks(task_data_path: PathBuf) {
+    fs::remove_dir_all(task_data_path).unwrap();
+}