From d197c06688e09cf989d9d7688868f02d704a62b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rn-Michael=20Miehe?=
 <40151420+ldericher@users.noreply.github.com>
Date: Mon, 2 Jun 2025 23:57:17 +0000
Subject: [PATCH] struct AppState

---
 Cargo.lock             | 92 ++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml             |  2 +
 src/appstate.rs        | 49 ++++++++++++++++++++++
 src/cli.rs             | 23 +++++++++--
 src/main.rs            |  6 +++
 src/sharry/alias.rs    |  3 +-
 src/sharry/file/mod.rs |  7 +++-
 src/sharry/share.rs    |  3 +-
 8 files changed, 179 insertions(+), 6 deletions(-)
 create mode 100644 src/appstate.rs

diff --git a/Cargo.lock b/Cargo.lock
index 4299e43..f7120d5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -73,6 +73,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "bitflags"
+version = "2.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
+
 [[package]]
 name = "bytes"
 version = "1.10.1"
@@ -187,6 +193,27 @@ dependencies = [
  "powerfmt",
 ]
 
+[[package]]
+name = "dirs-next"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
+dependencies = [
+ "cfg-if",
+ "dirs-sys-next",
+]
+
+[[package]]
+name = "dirs-sys-next"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "displaydoc"
 version = "0.2.5"
@@ -460,6 +487,16 @@ version = "0.2.172"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d750af042f7ef4f724306de029d18836c26c1765a54a6a3f094cbd23a7267ffa"
 
+[[package]]
+name = "libredox"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0ff37bd590ca25063e35af745c343cb7a0271906fb7b37e4813e8f79f00268d"
+dependencies = [
+ "bitflags",
+ "libc",
+]
+
 [[package]]
 name = "litemap"
 version = "0.8.0"
@@ -565,6 +602,17 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+dependencies = [
+ "getrandom",
+ "libredox",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.1"
@@ -701,9 +749,11 @@ name = "shrupl"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "dirs-next",
  "env_logger",
  "log",
  "serde",
+ "serde_json",
  "ureq",
 ]
 
@@ -753,6 +803,26 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "time"
 version = "0.3.41"
@@ -898,6 +968,28 @@ dependencies = [
  "rustls-pki-types",
 ]
 
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
diff --git a/Cargo.toml b/Cargo.toml
index e585b7a..b424a76 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,9 +6,11 @@ description = "ShrUpl is a tool to upload files to a Sharry Instance through a p
 
 [dependencies]
 clap = { version = "4.5.38", features = ["derive"] }
+dirs-next = "2.0.0"
 env_logger = "0.11.8"
 log = "0.4.27"
 serde = { version = "1.0.219", features = ["derive"] }
+serde_json = "1.0.140"
 ureq = { version = "3.0.11", features = ["json"] }
 
 [profile.release]
diff --git a/src/appstate.rs b/src/appstate.rs
new file mode 100644
index 0000000..583c21a
--- /dev/null
+++ b/src/appstate.rs
@@ -0,0 +1,49 @@
+use std::{
+    fs,
+    io::{self, Write},
+    path::Path,
+};
+
+use log::{debug, trace};
+use serde::{Deserialize, Serialize};
+
+use super::{
+    cli::Cli,
+    sharry::{Alias, File, Share},
+};
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct AppState {
+    alias: Alias,
+    share: Share,
+    files: Vec<File>,
+}
+
+impl AppState {
+    fn load(file_name: impl AsRef<Path>) -> io::Result<Self> {
+        let content = fs::read_to_string(file_name)?;
+        let state = serde_json::from_str(&content).map_err(io::Error::other)?;
+
+        Ok(state)
+    }
+
+    fn save(&self, file_name: impl AsRef<Path>) -> io::Result<()> {
+        let json = serde_json::to_string_pretty(self).map_err(io::Error::other)?;
+        let mut file = fs::File::create(file_name)?;
+        file.write_all(json.as_bytes())?;
+
+        Ok(())
+    }
+
+    pub fn try_resume(args: &Cli) -> Option<Self> {
+        let file_name = dirs_next::cache_dir()?
+            .join("shrupl")
+            .join(format!("{}.json", args.get_hash()));
+
+        trace!("loading from {}", file_name.display());
+
+        Self::load(&file_name)
+            .inspect_err(|e| debug!("could not resume from {}: {e}", file_name.display()))
+            .ok()
+    }
+}
diff --git a/src/cli.rs b/src/cli.rs
index f875f9c..a83a1a3 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,15 +1,18 @@
-use std::time::Duration;
+use std::{
+    hash::{DefaultHasher, Hash, Hasher},
+    time::Duration,
+};
 
 use clap::{Parser, builder::PossibleValuesParser};
 
-use super::sharry::{File, Alias, Uri, NewShareRequest};
+use super::sharry::{Alias, File, NewShareRequest, Uri};
 
 #[derive(Parser, Debug, Hash)]
 #[command(version, about, long_about = None)]
 pub struct Cli {
     /// Timeout in seconds for HTTP actions (set 0 or invalid to disable)
     #[arg(
-        short, long, 
+        short, long,
         default_value = "10", value_name = "SECS",
         value_parser = parse_seconds,
     )]
@@ -70,4 +73,18 @@ impl Cli {
     pub fn get_share_request(&self) -> NewShareRequest {
         NewShareRequest::new(&self.name, self.description.as_ref(), self.max_views)
     }
+
+    pub fn get_hash(&self) -> String {
+        let file_refs = {
+            let mut refs: Vec<_> = self.files.iter().map(File::get_path).collect();
+            refs.sort_unstable();
+
+            refs
+        };
+
+        let mut hasher = DefaultHasher::new();
+        (self.get_alias(), file_refs).hash(&mut hasher);
+
+        format!("{:x}", hasher.finish())
+    }
 }
diff --git a/src/main.rs b/src/main.rs
index 7a34958..cc51e17 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,4 @@
+mod appstate;
 mod cli;
 mod sharry;
 
@@ -5,6 +6,7 @@ use clap::Parser;
 use log::{error, info};
 use ureq::Agent;
 
+use appstate::AppState;
 use cli::Cli;
 use sharry::Share;
 
@@ -20,6 +22,10 @@ fn main() {
         .build()
         .into();
 
+    if let Some(state) = AppState::try_resume(&args) {
+        info!("state: {state:?}");
+    }
+
     let alias = args.get_alias();
     let share = Share::create(&agent, &alias, args.get_share_request()).unwrap();
     info!("share: {share:?}");
diff --git a/src/sharry/alias.rs b/src/sharry/alias.rs
index 8bd2cf7..bd8a8d0 100644
--- a/src/sharry/alias.rs
+++ b/src/sharry/alias.rs
@@ -1,11 +1,12 @@
 use std::fmt::{Debug, Display};
 
 use log::debug;
+use serde::{Deserialize, Serialize};
 use ureq::RequestBuilder;
 
 use super::api::Uri;
 
-#[derive(Debug, Hash)]
+#[derive(Serialize, Deserialize, Debug, Hash)]
 pub struct Alias {
     pub(super) api_uri: String,
     pub(super) id: String,
diff --git a/src/sharry/file/mod.rs b/src/sharry/file/mod.rs
index e948103..6abae89 100644
--- a/src/sharry/file/mod.rs
+++ b/src/sharry/file/mod.rs
@@ -9,6 +9,7 @@ use std::{
 };
 
 use log::{debug, error};
+use serde::{Deserialize, Serialize};
 use ureq::{Error::Other, http::StatusCode};
 
 use super::{
@@ -17,7 +18,7 @@ use super::{
 };
 pub use chunks::{Chunk, FileChunks};
 
-#[derive(Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct File {
     abs_path: PathBuf,
     name: String,
@@ -52,6 +53,10 @@ impl File {
         })
     }
 
+    pub fn get_path(&self) -> &Path {
+        &self.abs_path
+    }
+
     pub fn create(
         self,
         http: &ureq::Agent,
diff --git a/src/sharry/share.rs b/src/sharry/share.rs
index b9254bd..0733bd4 100644
--- a/src/sharry/share.rs
+++ b/src/sharry/share.rs
@@ -1,11 +1,12 @@
 use log::debug;
+use serde::{Deserialize, Serialize};
 
 use super::{
     alias::{Alias, SharryAlias},
     api::{NewShareRequest, NewShareResponse, NotifyShareResponse},
 };
 
-#[derive(Debug)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct Share {
     pub(super) id: String,
 }