flatland_client_lib/
client_config.rs

1//! Persistent client settings (game host, API base) for installed play.
2
3use std::net::SocketAddr;
4use std::path::PathBuf;
5
6use serde::{Deserialize, Serialize};
7
8pub const DEFAULT_GAME_PORT: u16 = 7373;
9pub const DEFAULT_API_PORT: u16 = 7380;
10
11#[derive(Debug, Clone, Serialize, Deserialize, Default)]
12pub struct GfxWindowPrefs {
13    /// Last window width in logical pixels.
14    #[serde(default, skip_serializing_if = "Option::is_none")]
15    pub width: Option<u32>,
16    /// Last window height in logical pixels.
17    #[serde(default, skip_serializing_if = "Option::is_none")]
18    pub height: Option<u32>,
19    /// Window X (platform coordinates; macOS AppKit bottom-left origin).
20    #[serde(default, skip_serializing_if = "Option::is_none")]
21    pub x: Option<u32>,
22    /// Window Y.
23    #[serde(default, skip_serializing_if = "Option::is_none")]
24    pub y: Option<u32>,
25}
26
27#[derive(Debug, Clone, Serialize, Deserialize, Default)]
28pub struct ClientConfig {
29    /// Gateway host (IPv4, IPv6, or DNS name). Port defaults to 7373.
30    #[serde(default, skip_serializing_if = "Option::is_none")]
31    pub game_host: Option<String>,
32    /// Control plane HTTP port when `game_host` is set. Defaults to 7380.
33    #[serde(default, skip_serializing_if = "Option::is_none")]
34    pub api_port: Option<u16>,
35    /// Gateway TCP port when `game_host` is set. Defaults to 7373.
36    #[serde(default, skip_serializing_if = "Option::is_none")]
37    pub game_port: Option<u16>,
38    /// Gfx play window geometry (`flatland3-gfx`).
39    #[serde(default, skip_serializing_if = "GfxWindowPrefs::is_empty")]
40    pub gfx_window: GfxWindowPrefs,
41    /// Last HUD view mode from `.` cycle: `normal` | `compact` | `map`.
42    #[serde(default, skip_serializing_if = "Option::is_none")]
43    pub hud_view: Option<String>,
44}
45
46impl GfxWindowPrefs {
47    pub fn is_empty(&self) -> bool {
48        self.width.is_none()
49            && self.height.is_none()
50            && self.x.is_none()
51            && self.y.is_none()
52    }
53}
54
55impl ClientConfig {
56    pub fn path() -> anyhow::Result<PathBuf> {
57        let base = dirs::config_dir()
58            .ok_or_else(|| anyhow::anyhow!("could not resolve config directory"))?;
59        Ok(base.join("flatland").join("client.json"))
60    }
61
62    pub fn load() -> Self {
63        Self::path()
64            .ok()
65            .and_then(|path| std::fs::read(&path).ok())
66            .and_then(|bytes| serde_json::from_slice(&bytes).ok())
67            .unwrap_or_default()
68    }
69
70    pub fn save(&self) -> anyhow::Result<()> {
71        let path = Self::path()?;
72        if let Some(parent) = path.parent() {
73            std::fs::create_dir_all(parent)?;
74        }
75        std::fs::write(path, serde_json::to_vec_pretty(self)?)?;
76        Ok(())
77    }
78
79    pub fn save_gfx_window(&mut self, prefs: GfxWindowPrefs) -> anyhow::Result<()> {
80        self.gfx_window = prefs;
81        self.save()
82    }
83
84    /// Persist the `.` HUD view mode (`normal` / `compact` / `map`).
85    pub fn save_hud_view(&mut self, label: &str) -> anyhow::Result<()> {
86        self.hud_view = Some(label.to_string());
87        self.save()
88    }
89
90    pub fn set_game_host(&mut self, host: impl Into<String>) -> anyhow::Result<()> {
91        let host = host.into().trim().to_string();
92        if host.is_empty() {
93            anyhow::bail!("game host cannot be empty");
94        }
95        self.game_host = Some(host);
96        self.save()
97    }
98
99    pub fn game_server_addr(&self) -> SocketAddr {
100        if let Some(host) = self.game_host.as_deref() {
101            let port = self.game_port.unwrap_or(DEFAULT_GAME_PORT);
102            return parse_host_port(host, port)
103                .unwrap_or_else(|| format!("{host}:{port}").parse().expect("valid host:port"));
104        }
105        "127.0.0.1:7373".parse().expect("valid default addr")
106    }
107
108    pub fn api_base_url(&self) -> String {
109        if let Some(host) = self.game_host.as_deref() {
110            let port = self.api_port.unwrap_or(DEFAULT_API_PORT);
111            if host.starts_with("http://") || host.starts_with("https://") {
112                return host.to_string();
113            }
114            return format!("http://{host}:{port}");
115        }
116        "http://127.0.0.1:7380".into()
117    }
118}
119
120pub fn default_game_server_addr() -> SocketAddr {
121    if let Ok(addr) = std::env::var("FLATLAND_GATEWAY_ADDR") {
122        if let Ok(parsed) = addr.parse() {
123            return parsed;
124        }
125    }
126    ClientConfig::load().game_server_addr()
127}
128
129pub fn default_api_base_url() -> String {
130    if let Ok(url) = std::env::var("FLATLAND_API_URL") {
131        return url;
132    }
133    ClientConfig::load().api_base_url()
134}
135
136fn parse_host_port(host: &str, default_port: u16) -> Option<SocketAddr> {
137    if host.contains(':') {
138        host.parse().ok()
139    } else {
140        format!("{host}:{default_port}").parse().ok()
141    }
142}
143
144#[cfg(test)]
145mod tests {
146    use super::*;
147
148    #[test]
149    fn default_is_localhost() {
150        let cfg = ClientConfig::default();
151        assert_eq!(
152            cfg.game_server_addr(),
153            "127.0.0.1:7373".parse().unwrap()
154        );
155        assert_eq!(cfg.api_base_url(), "http://127.0.0.1:7380");
156    }
157
158    #[test]
159    fn hud_view_roundtrips_in_config() {
160        let mut cfg = ClientConfig::default();
161        cfg.hud_view = Some("map".into());
162        let json = serde_json::to_string(&cfg).unwrap();
163        let loaded: ClientConfig = serde_json::from_str(&json).unwrap();
164        assert_eq!(loaded.hud_view.as_deref(), Some("map"));
165    }
166}
flatland_client_lib/client_config.rs

flatland_client_lib/
client_config.rs
