funman300
4b51e50203
dirs::data_dir() returns None on Android, which silently disabled every persistence path (settings, stats, achievements, replays, game-state, time-attack sessions, user themes). New solitaire_data::platform::data_dir() shim falls through to dirs::data_dir() on desktop and returns the per-app sandbox at /data/data/com.solitairequest.app/files on Android — no JNI needed, since the package id is pinned in [package.metadata.android]. CLAUDE.md §10 already flagged this as a known pitfall; the shim pays it down at the one chokepoint instead of per feature. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
113 lines
3.3 KiB
Rust
113 lines
3.3 KiB
Rust
//! Persistence for per-player achievement unlock records.
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//!
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//! The [`AchievementRecord`] struct is defined in `solitaire_sync` so the
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//! server can use the same type. This module re-exports it and provides
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//! file I/O helpers.
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use std::fs;
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use std::io;
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use std::path::{Path, PathBuf};
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pub use solitaire_sync::AchievementRecord;
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const APP_DIR_NAME: &str = "solitaire_quest";
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const FILE_NAME: &str = "achievements.json";
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/// Platform-specific default path for `achievements.json`.
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pub fn achievements_file_path() -> Option<PathBuf> {
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crate::data_dir().map(|d| d.join(APP_DIR_NAME).join(FILE_NAME))
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}
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/// Load achievements from an explicit path. Returns `Vec::new()` if the file
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/// is missing or unreadable.
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pub fn load_achievements_from(path: &Path) -> Vec<AchievementRecord> {
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let Ok(data) = fs::read(path) else {
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return Vec::new();
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};
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serde_json::from_slice(&data).unwrap_or_default()
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}
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/// Save achievements to an explicit path using an atomic write.
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pub fn save_achievements_to(path: &Path, records: &[AchievementRecord]) -> io::Result<()> {
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if let Some(parent) = path.parent() {
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fs::create_dir_all(parent)?;
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}
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let json = serde_json::to_string_pretty(records).map_err(io::Error::other)?;
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let tmp = path.with_extension("json.tmp");
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fs::write(&tmp, json.as_bytes())?;
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fs::rename(&tmp, path)?;
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Ok(())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use chrono::Utc;
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use std::env;
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fn tmp_path(name: &str) -> PathBuf {
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env::temp_dir().join(format!("solitaire_ach_test_{name}.json"))
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}
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#[test]
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fn unlock_sets_flag_and_date() {
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let mut r = AchievementRecord::locked("x");
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let at = Utc::now();
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r.unlock(at);
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assert!(r.unlocked);
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assert_eq!(r.unlock_date, Some(at));
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}
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#[test]
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fn unlock_is_idempotent_on_date() {
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let mut r = AchievementRecord::locked("x");
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let first = Utc::now();
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r.unlock(first);
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let later = first + chrono::Duration::hours(1);
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r.unlock(later);
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assert_eq!(r.unlock_date, Some(first), "earliest date preserved");
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}
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#[test]
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fn round_trip_save_and_load() {
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let path = tmp_path("round_trip");
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let _ = fs::remove_file(&path);
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let records = vec![
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AchievementRecord::locked("first_win"),
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{
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let mut r = AchievementRecord::locked("century");
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r.unlock(Utc::now());
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r
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},
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];
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save_achievements_to(&path, &records).expect("save");
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let loaded = load_achievements_from(&path);
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assert_eq!(loaded.len(), 2);
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assert_eq!(loaded[1].id, "century");
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assert!(loaded[1].unlocked);
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}
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#[test]
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fn load_from_missing_file_returns_empty() {
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let path = tmp_path("missing_abc");
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let _ = fs::remove_file(&path);
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assert!(load_achievements_from(&path).is_empty());
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}
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#[test]
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fn load_from_corrupt_file_returns_empty() {
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let path = tmp_path("corrupt");
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fs::write(&path, b"not json").expect("write");
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assert!(load_achievements_from(&path).is_empty());
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}
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#[test]
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fn save_cleans_up_tmp_file() {
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let path = tmp_path("atomic");
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save_achievements_to(&path, &[]).expect("save");
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let tmp = path.with_extension("json.tmp");
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assert!(!tmp.exists());
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}
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}
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