commit a6bc2bd2e947d73f18c7a118ba4836c4ea7e6531
Author: Dominic Grimm <dominic@dergrimm.net>
Date:   Wed Dec 14 15:29:10 2022 +0100

    Init

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4fffb2f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..51b67d0
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,21 @@
+[package]
+name = "untis"
+version = "0.1.0"
+description = "Rust client for WebUntis JSON-RPC and REST API"
+authors = ["Dominic Grimm <dominic@dergrimm.net>"]
+edition = "2021"
+homepage = "https://git.dergrimm.net/dergrimm/untis.rs"
+repository = "https://git.dergrimm.net/dergrimm/untis.rs.git"
+license = "MIT"
+publish = false
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = { version = "1.0.66", features = ["backtrace"] }
+chrono = { version = "0.4.23", features = ["serde"] }
+cookie = "0.16.1"
+reqwest = { version = "0.11.13", features = ["json"] }
+serde = { version = "1.0.150", features = ["derive"] }
+serde_json = "1.0.89"
+url = "2.3.1"
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d515a24
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 Dominic Grimm
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..c54d77f
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,724 @@
+use anyhow::{bail, Context, Result};
+use chrono::Datelike;
+use cookie::Cookie;
+use serde::Deserialize;
+use serde_json::json;
+
+fn deserialize_date<'de, D>(deserializer: D) -> Result<chrono::NaiveDate, D::Error>
+where
+    D: serde::de::Deserializer<'de>,
+{
+    struct Visitor;
+
+    impl<'de> serde::de::Visitor<'de> for Visitor {
+        type Value = chrono::NaiveDate;
+
+        fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
+            formatter.write_str("a naive date serialized as an unsigned integer")
+        }
+
+        fn visit_u64<E>(self, mut v: u64) -> Result<Self::Value, E>
+        where
+            E: serde::de::Error,
+        {
+            let y = (v / 10000) as i32;
+            v %= 10000;
+            let m = (v / 100) as u32;
+            v %= 100;
+
+            match chrono::NaiveDate::from_ymd_opt(y, m, v as u32) {
+                Some(x) => Ok(x),
+                None => Err(E::custom(format!("No such date: {}-{}-{}", y, m, v))),
+            }
+        }
+    }
+
+    deserializer.deserialize_u64(Visitor)
+}
+
+fn serialize_date(date: chrono::NaiveDate) -> u64 {
+    date.year() as u64 * 10000 + date.month() as u64 * 100 + date.day() as u64
+}
+
+fn deserialize_time<'de, D>(deserializer: D) -> Result<chrono::NaiveTime, D::Error>
+where
+    D: serde::de::Deserializer<'de>,
+{
+    struct Visitor;
+
+    impl<'de> serde::de::Visitor<'de> for Visitor {
+        type Value = chrono::NaiveTime;
+
+        fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
+            formatter.write_str("a naive time serialized as an unsigned integer")
+        }
+
+        fn visit_u64<E>(self, mut v: u64) -> Result<Self::Value, E>
+        where
+            E: serde::de::Error,
+        {
+            let h = v / 100;
+            v %= 100;
+
+            match chrono::NaiveTime::from_hms_opt(h as u32, v as u32, 0) {
+                Some(x) => Ok(x),
+                None => Err(E::custom(format!("No such time: {}:{}", h, v))),
+            }
+        }
+    }
+
+    deserializer.deserialize_u64(Visitor)
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcError {
+    pub message: String,
+    pub code: i32,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcResponse<T> {
+    pub jsonrpc: String,
+    pub id: String,
+    pub result: Option<T>,
+    pub error: Option<RpcError>,
+}
+
+#[derive(Deserialize, Debug)]
+struct RpcEmptyResult;
+
+#[derive(Deserialize, Debug)]
+pub struct RpcLogin {
+    #[serde(rename = "sessionId")]
+    pub session_id: String,
+    #[serde(rename = "personType")]
+    pub person_type: i32,
+    #[serde(rename = "personId")]
+    pub person_id: i32,
+    #[serde(rename = "klasseId")]
+    pub class_id: i32,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcClass {
+    pub id: i32,
+    pub name: String,
+    #[serde(rename = "longName")]
+    pub long_name: String,
+    pub active: bool,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcSubject {
+    pub id: i32,
+    pub name: String,
+    #[serde(rename = "longName")]
+    pub long_name: String,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcRoom {
+    pub id: i32,
+    pub name: String,
+    #[serde(rename = "longName")]
+    pub long_name: String,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcDepartment {
+    pub id: i32,
+    pub name: String,
+    #[serde(rename = "longName")]
+    pub long_name: String,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcHoliday {
+    pub id: i32,
+    pub name: String,
+    #[serde(rename = "longName")]
+    pub long_name: String,
+    #[serde(rename = "startDate", deserialize_with = "deserialize_date")]
+    pub start_date: chrono::NaiveDate,
+    #[serde(rename = "endDate", deserialize_with = "deserialize_date")]
+    pub end_date: chrono::NaiveDate,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcTimegridDayTimeUnit {
+    #[serde(rename = "startTime", deserialize_with = "deserialize_time")]
+    pub start_time: chrono::NaiveTime,
+    #[serde(rename = "endTime", deserialize_with = "deserialize_time")]
+    pub end_time: chrono::NaiveTime,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcTimegridDay {
+    pub day: u8,
+    #[serde(rename = "timeUnits")]
+    pub time_units: Vec<RpcTimegridDayTimeUnit>,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcSchoolyear {
+    pub id: i32,
+    pub name: String,
+    #[serde(rename = "startDate", deserialize_with = "deserialize_date")]
+    pub start_date: chrono::NaiveDate,
+    #[serde(rename = "endDate", deserialize_with = "deserialize_date")]
+    pub end_date: chrono::NaiveDate,
+}
+
+#[derive(Deserialize, Clone, Copy, Debug)]
+pub enum RpcSubstitionType {
+    #[serde(rename = "cancel")]
+    Cancel,
+    #[serde(rename = "subst")]
+    Substitution,
+    #[serde(rename = "add")]
+    Additional,
+    #[serde(rename = "shift")]
+    Shifted,
+    #[serde(rename = "rmchg")]
+    RoomChange,
+    #[serde(rename = "rmlk")]
+    Locked,
+    #[serde(rename = "bs")]
+    BreakSupervision,
+    #[serde(rename = "oh")]
+    OfficeHour,
+    #[serde(rename = "sb")]
+    Standby,
+    #[serde(rename = "other")]
+    Other,
+    #[serde(rename = "free")]
+    Free,
+    #[serde(rename = "exam")]
+    Exam,
+    #[serde(rename = "ac")]
+    Activity,
+    #[serde(rename = "holi")]
+    Holiday,
+    #[serde(rename = "stxt")]
+    Text,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcSubstitutionId {
+    pub id: i32,
+    pub name: Option<String>,
+    #[serde(rename = "externalkey")]
+    pub external_key: Option<String>,
+    #[serde(rename = "orgid")]
+    pub original_id: Option<i32>,
+    #[serde(rename = "orgname")]
+    pub original_name: Option<String>,
+    #[serde(rename = "orgexternalkey")]
+    pub original_external_key: Option<String>,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcSubstitutionReschedule {
+    #[serde(deserialize_with = "deserialize_date")]
+    pub date: chrono::NaiveDate,
+    #[serde(rename = "startTime", deserialize_with = "deserialize_time")]
+    pub start_time: chrono::NaiveTime,
+    #[serde(rename = "endTime", deserialize_with = "deserialize_time")]
+    pub end_time: chrono::NaiveTime,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct RpcSubstitution {
+    #[serde(rename = "type")]
+    pub subst_type: RpcSubstitionType,
+    #[serde(rename = "lsid")]
+    pub lesson_id: i32,
+    #[serde(rename = "startTime", deserialize_with = "deserialize_time")]
+    pub start_time: chrono::NaiveTime,
+    #[serde(rename = "endTime", deserialize_with = "deserialize_time")]
+    pub end_time: chrono::NaiveTime,
+    #[serde(rename = "txt")]
+    pub text: Option<String>,
+    #[serde(rename = "kl")]
+    pub classes: Vec<RpcSubstitutionId>,
+    #[serde(rename = "te")]
+    pub teachers: Vec<RpcSubstitutionId>,
+    #[serde(rename = "su")]
+    pub subjects: Vec<RpcSubstitutionId>,
+    #[serde(rename = "ro")]
+    pub rooms: Vec<RpcSubstitutionId>,
+    pub reschedule: Option<RpcSubstitutionReschedule>,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct ApiTenant {
+    pub id: i32,
+    #[serde(rename = "displayName")]
+    pub display_name: String,
+}
+
+#[derive(Deserialize, Debug)]
+struct ApiDataResponse {
+    tenant: ApiTenant,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct ApiTeacher {
+    pub id: i32,
+    pub name: String,
+    pub forename: String,
+    #[serde(rename = "longName")]
+    pub long_name: String,
+    #[serde(rename = "displayname")]
+    pub display_name: String,
+}
+
+#[derive(Deserialize, Debug)]
+struct ApiTeachersResponseData {
+    elements: Vec<ApiTeacher>,
+}
+
+#[derive(Deserialize, Debug)]
+struct ApiTeachersResponse {
+    data: ApiTeachersResponseData,
+}
+
+#[derive(Debug)]
+pub struct Client {
+    pub api_url: url::Url,
+    pub rpc_url: url::Url,
+    pub client_name: String,
+    pub username: String,
+    pub password: String,
+    pub session: Option<String>,
+    pub authorization: Option<String>,
+}
+
+impl Client {
+    pub fn gen_rpc_url(mut endpoint: url::Url, school: &str) -> url::Url {
+        endpoint.query_pairs_mut().append_pair("school", school);
+
+        endpoint
+    }
+
+    pub async fn login_rpc(&mut self) -> Result<RpcLogin> {
+        let resp: RpcResponse<RpcLogin> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .json(&json!({
+                "id": "ID",
+                "method": "authenticate",
+                "params": {
+                    "user": self.username,
+                    "password": self.password,
+                    "client": self.client_name,
+                },
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        self.session = Some(
+            Cookie::new(
+                "JSESSIONID",
+                &resp
+                    .result
+                    .as_ref()
+                    .context("Result null event though error not")?
+                    .session_id,
+            )
+            .to_string(),
+        );
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn login_api(&mut self) -> Result<String> {
+        let jwt = reqwest::Client::new()
+            .get(self.api_url.join("token/new")?)
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .send()
+            .await?
+            .text()
+            .await?;
+        self.authorization = Some(jwt.to_string());
+
+        Ok(jwt)
+    }
+
+    pub async fn login(&mut self) -> Result<()> {
+        self.login_rpc().await?;
+        self.login_api().await?;
+
+        Ok(())
+    }
+
+    pub async fn logout(&mut self) -> Result<()> {
+        let resp: RpcResponse<RpcEmptyResult> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "logout",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        self.session = None;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        Ok(())
+    }
+
+    pub async fn classes(&self) -> Result<Vec<RpcClass>> {
+        let resp: RpcResponse<Vec<RpcClass>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getKlassen",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn subjects(&self) -> Result<Vec<RpcSubject>> {
+        let resp: RpcResponse<Vec<RpcSubject>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getSubjects",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn rooms(&self) -> Result<Vec<RpcRoom>> {
+        let resp: RpcResponse<Vec<RpcRoom>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getRooms",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn departments(&self) -> Result<Vec<RpcDepartment>> {
+        let resp: RpcResponse<Vec<RpcDepartment>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getDepartments",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn holidays(&self) -> Result<Vec<RpcHoliday>> {
+        let resp: RpcResponse<Vec<RpcHoliday>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getHolidays",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn timegrid(&self) -> Result<Vec<RpcTimegridDay>> {
+        let resp: RpcResponse<Vec<RpcTimegridDay>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getTimegridUnits",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn current_schoolyear(&self) -> Result<RpcSchoolyear> {
+        let resp: RpcResponse<RpcSchoolyear> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getCurrentSchoolyear",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn schoolyears(&self) -> Result<Vec<RpcSchoolyear>> {
+        let resp: RpcResponse<Vec<RpcSchoolyear>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getSchoolyears",
+                "params": {},
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub async fn substitutions(
+        &self,
+        from: &chrono::NaiveDate,
+        to: &chrono::NaiveDate,
+        department: Option<i32>,
+    ) -> Result<Vec<RpcSubstitution>> {
+        let resp: RpcResponse<Vec<RpcSubstitution>> = reqwest::Client::new()
+            .get(self.rpc_url.as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .json(&json!({
+                "id": "ID",
+                "method": "getSubstitutions",
+                "params": {
+                    "startDate": serialize_date(*from),
+                    "endDate": serialize_date(*to),
+                    "departmentId": department.map_or(0, |d| d)
+                },
+                "jsonrpc": "2.0"
+            }))
+            .send()
+            .await?
+            .json()
+            .await?;
+        if let Some(e) = resp.error {
+            bail!("RPC error: {:?}", e);
+        }
+
+        if let Some(x) = resp.result {
+            Ok(x)
+        } else {
+            bail!("RPC result is null");
+        }
+    }
+
+    pub fn construct_bearer(auth: &str) -> String {
+        format!("Bearer {}", auth)
+    }
+
+    pub async fn current_tenant(&self) -> Result<ApiTenant> {
+        let resp: ApiDataResponse = reqwest::Client::new()
+            .get(self.api_url.join("rest/view/v1/app/data")?)
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .header(
+                reqwest::header::AUTHORIZATION,
+                Client::construct_bearer(&self.authorization.as_ref().context("Not logged in")?),
+            )
+            .send()
+            .await?
+            .json()
+            .await?;
+
+        Ok(resp.tenant)
+    }
+
+    pub async fn teachers(&self) -> Result<Vec<ApiTeacher>> {
+        let mut url = self.api_url.join("public/timetable/weekly/pageconfig")?;
+        url.query_pairs_mut().append_pair("type", "2");
+        let resp: ApiTeachersResponse = reqwest::Client::new()
+            .get(url)
+            .header(reqwest::header::ACCEPT, "application/json")
+            .header(
+                reqwest::header::COOKIE,
+                self.session.as_ref().context("Not logged in")?,
+            )
+            .header(
+                reqwest::header::AUTHORIZATION,
+                Client::construct_bearer(&self.authorization.as_ref().context("Not logged in")?),
+            )
+            .send()
+            .await?
+            .json()
+            .await?;
+
+        Ok(resp.data.elements)
+    }
+
+    pub async fn exams(&self) -> Result<()> {
+        Ok(())
+    }
+}