Break: read replay packets

src/models/data/entity_method.rs

@@ -0,0 +1,28 @@
+use byteorder::{LittleEndian, ReadBytesExt};
+use serde::Serialize;
+
+use crate::result::Result;
+
+#[derive(Debug, Serialize)]
+pub enum EntityMethod {
+    /// TODO: team composition.
+    Subtype2F,
+
+    /// Default variant when subtype is not known.
+    Unknown { sub_type: u32, payload: Vec<u8> },
+}
+
+impl EntityMethod {
+    pub fn new(payload: Vec<u8>) -> Result<Self> {
+        let mut reader = payload.as_slice();
+
+        reader.read_u32::<LittleEndian>()?;
+        let sub_type = reader.read_u32::<LittleEndian>()?;
+
+        let this = match sub_type {
+            0x2F => Self::Subtype2F,
+            _ => Self::Unknown { sub_type, payload },
+        };
+        Ok(this)
+    }
+}

src/models/data/packet.rs

@@ -0,0 +1,32 @@
+use std::io::Read;
+
+use byteorder::{LittleEndian, ReadBytesExt};
+use serde::Serialize;
+
+use crate::models::data::payload::Payload;
+use crate::result::Result;
+
+#[derive(Debug, Serialize)]
+pub struct Packet {
+    pub clock: f32,
+    pub payload: Payload,
+}
+
+impl Packet {
+    pub fn from_reader(reader: &mut impl Read) -> Result<Option<Self>> {
+        let Ok(length) = reader.read_u32::<LittleEndian>() else { return Ok(None) };
+        let type_ = reader.read_u32::<LittleEndian>()?;
+        let clock = reader.read_f32::<LittleEndian>()?;
+        let payload = Self::read_payload(reader, length as usize)?;
+        let payload = Payload::new(type_, payload)?;
+        let this = Self { clock, payload };
+        Ok(Some(this))
+    }
+
+    fn read_payload(reader: &mut impl Read, length: usize) -> Result<Vec<u8>> {
+        let mut buffer = Vec::new();
+        buffer.resize(length, 0);
+        reader.read_exact(&mut buffer)?;
+        Ok(buffer)
+    }
+}

src/models/data/payload.rs

@@ -0,0 +1,51 @@
+use std::io::Read;
+
+use byteorder::{LittleEndian, ReadBytesExt};
+use serde::Serialize;
+use serde_with::serde_as;
+
+use crate::models::data::replay_header::ReplayHeader;
+use crate::models::data::{assert_magic, read_pickled, read_string, EntityMethod};
+use crate::result::Result;
+
+#[serde_as]
+#[derive(Debug, Serialize)]
+pub enum Payload {
+    ReplayHeader(ReplayHeader),
+    EntityMethod(EntityMethod),
+
+    /// Default payload when type is not known.
+    Unknown(#[serde_as(as = "serde_with::hex::Hex")] Vec<u8>),
+}
+
+impl Payload {
+    pub fn new(type_: u32, payload: Vec<u8>) -> Result<Self> {
+        let this = match type_ {
+            0 => {
+                let mut reader = payload.as_slice();
+                reader.read_exact(&mut [0; 10])?;
+
+                let author_nickname = read_string(&mut reader)?;
+                let arena_unique_id = reader.read_u64::<LittleEndian>()?;
+                let arena_type_id = reader.read_u32::<LittleEndian>()?;
+                let summary = {
+                    assert_magic(reader.read_u8()?, 0xFF)?;
+                    let pickled_length = reader.read_u16::<LittleEndian>()?;
+                    assert_magic(reader.read_u8()?, 0x00)?;
+                    read_pickled(&mut reader, pickled_length as usize)?
+                };
+                Self::ReplayHeader(ReplayHeader {
+                    summary,
+                    author_nickname,
+                    arena_unique_id,
+                    arena_type_id,
+                })
+            }
+
+            8 => Self::EntityMethod(EntityMethod::new(payload)?),
+
+            _ => Self::Unknown(payload),
+        };
+        Ok(this)
+    }
+}

src/models/data/replay_header.rs

@@ -0,0 +1,11 @@
+use serde::Serialize;
+
+use crate::models::data::Summary;
+
+#[derive(Debug, Serialize)]
+pub struct ReplayHeader {
+    pub summary: Summary,
+    pub author_nickname: String,
+    pub arena_unique_id: u64,
+    pub arena_type_id: u32,
+}

src/models/data/summary.rs

@@ -0,0 +1,27 @@
+use std::collections::HashMap;
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Summary {
+    #[serde(rename = "playersBattleCategoriesIds")]
+    pub players_battle_categories_ids: HashMap<u32, (u8, u32)>,
+
+    #[serde(rename = "battleLevel")]
+    pub battle_level: u8,
+
+    #[serde(rename = "battleCategoryId")]
+    pub battle_category_id: u8,
+
+    #[serde(rename = "mouseEnabled")]
+    pub is_mouse_enabled: bool,
+
+    #[serde(rename = "mmType")]
+    pub matchmaker_type: u8,
+
+    #[serde(rename = "camouflageSlot")]
+    pub camouflage_slot: u8,
+
+    #[serde(rename = "avgMmr")]
+    pub average_mmr: Vec<f64>,
+}