List devices API working

backend/Cargo.lock

@@ -1548,6 +1548,7 @@ dependencies = [
  "rusqlite",
  "rusqlite_migration",
  "serde",
+ "serde_derive",
  "serde_json",
  "tokio 1.49.0",
  "tower-http",

backend/Cargo.toml

@@ -9,6 +9,7 @@ log = "0.4.29"
 pnet = "0.35.0"
 tokio = { version = "1.0", features = ["full"] }
 serde = { version = "1.0", features = ["derive"] }
+serde_derive = "1.0"
 serde_json = "1.0"
 rusqlite = { version = "0.38.0", features = ["bundled", "chrono"] }
 rusqlite_migration = { version = "2.4.1", features = ["from-directory"] }

backend/src/main.rs

@@ -9,6 +9,7 @@ mod mac_vendor_finder;
 mod model;
 mod scanner;
 mod settings;
+mod utils;
 mod web_server;
 
 #[cfg(test)]

backend/src/model/devices.rs

@@ -1,4 +1,5 @@
-use chrono::{DateTime, Utc, serde::ts_seconds};
+use crate::utils::date_serializer;
+use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 use std::fmt;
 
@@ -7,7 +8,7 @@ pub struct Device {
     pub mac_address: String,
     pub ipv4_address: String,
     pub vendor: String,
-    #[serde(with = "ts_seconds")]
+    #[serde(with = "date_serializer")]
     pub last_seen: DateTime<Utc>,
     pub is_registered: bool,
     pub owner: String,

backend/src/utils.rs

@@ -0,0 +1 @@
+pub mod date_serializer;

backend/src/utils/date_serializer.rs

@@ -0,0 +1,20 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Deserializer, Serialize, Serializer, de::Error};
+
+fn time_to_json(t: DateTime<Utc>) -> String {
+    t.to_rfc3339()
+}
+
+pub fn serialize<S: Serializer>(
+    datetime: &DateTime<Utc>,
+    serializer: S,
+) -> Result<S::Ok, S::Error> {
+    time_to_json(datetime.clone()).serialize(serializer)
+}
+
+pub fn deserialize<'de, D: Deserializer<'de>>(deserializer: D) -> Result<DateTime<Utc>, D::Error> {
+    let datetime: String = Deserialize::deserialize(deserializer)?;
+    Ok(DateTime::parse_from_str(&datetime, "%Y-%m-%d %H:%M:%S")
+        .map_err(D::Error::custom)?
+        .to_utc())
+}

backend/src/web_server.rs

@@ -1,7 +1,13 @@
-use std::error::Error;
+use std::{collections::HashMap, error::Error};
 
-use axum::{Json, Router, extract::Path, http::StatusCode, routing::get};
-use log::{debug, error, info};
+use axum::{
+    Json, Router,
+    extract::{Path, Query},
+    http::StatusCode,
+    routing::get,
+};
+use chrono::{DateTime, Utc};
+use log::{debug, error, info, warn};
 use tower_http::services::ServeDir;
 
 use crate::{
@@ -15,7 +21,7 @@ pub async fn serve() -> Result<(), Box<dyn Error>> {
 
     let router = Router::new()
         .route("/", get(|| async { "hello" }))
-        .route("/api/devices", get(get_devices))
+        .route("/api/devices", get(list_devices))
         .route("/api/notifications", get(list_notifications))
         .route("/api/notifications/{id}", get(read_notification))
         .route(
@@ -33,8 +39,75 @@ pub async fn serve() -> Result<(), Box<dyn Error>> {
     Ok(())
 }
 
-async fn get_devices() -> Result<Json<Vec<Device>>, StatusCode> {
-    unimplemented!();
+fn parse_parameter_bool(params: &HashMap<String, String>, name: &str) -> Option<bool> {
+    if params.contains_key(name) {
+        let param_value = params.get(name).unwrap().as_str();
+        debug!("Found parameter {name} with value {}", param_value);
+        match param_value.parse::<bool>() {
+            Ok(value) => Some(value),
+            Err(_) => None,
+        }
+    } else {
+        None
+    }
+}
+
+fn parse_parameter_string(params: &HashMap<String, String>, name: &str) -> Option<String> {
+    if params.contains_key(name) {
+        let param_value = params.get(name).unwrap().as_str();
+        debug!("Found parameter {name} with value {}", param_value);
+        Some(param_value.to_string())
+    } else {
+        None
+    }
+}
+
+fn parse_parameter_date(params: &HashMap<String, String>, name: &str) -> Option<DateTime<Utc>> {
+    if params.contains_key(name) {
+        let mut param_value = params.get(name).unwrap().to_ascii_uppercase();
+        if !param_value.ends_with("Z") {
+            param_value.push('Z');
+        }
+        debug!("Found parameter {name} with value {}", param_value);
+        match DateTime::parse_from_rfc3339(param_value.as_str()) {
+            Ok(value) => {
+                debug!("Date parsed to {}", value.to_utc().to_rfc3339());
+                Some(value.to_utc())
+            }
+            Err(err) => {
+                warn!("Error parsing date from parameters: {}", err);
+                None
+            }
+        }
+    } else {
+        None
+    }
+}
+
+async fn list_devices(
+    Query(params): Query<HashMap<String, String>>,
+) -> Result<Json<Vec<Device>>, StatusCode> {
+    let is_registered: Option<bool> = parse_parameter_bool(&params, "is_registered");
+    let last_seen_from: Option<DateTime<Utc>> = parse_parameter_date(&params, "last_seen_from");
+    let last_seen_to: Option<DateTime<Utc>> = parse_parameter_date(&params, "last_seen_to");
+    let owner: Option<String> = parse_parameter_string(&params, "owner");
+    let device_type: Option<String> = parse_parameter_string(&params, "device_type");
+    let vendor: Option<String> = parse_parameter_string(&params, "vendor");
+
+    match db::devices::list_devices(
+        is_registered,
+        last_seen_from,
+        last_seen_to,
+        owner,
+        device_type,
+        vendor,
+    ) {
+        Ok(value) => Ok(Json(value)),
+        Err(err) => {
+            error!("Error listing devices: {}", err);
+            Err(StatusCode::INTERNAL_SERVER_ERROR)
+        }
+    }
 }
 
 async fn read_notification(Path(id): Path<i64>) -> Result<Json<Notification>, StatusCode> {