From 92b27b876bec816f8711c0cabe10db11eda53b32 Mon Sep 17 00:00:00 2001
From: qwjyh <urataw421@gmail.com>
Date: Fri, 25 Aug 2023 23:51:45 +0900
Subject: [PATCH] new: setup device for the first device

---
 Cargo.lock  | 1062 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   18 +
 src/init.rs |    0
 src/main.rs |  268 +++++++++++++
 4 files changed, 1348 insertions(+)
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/init.rs
 create mode 100644 src/main.rs

diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..c0ba196
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,1062 @@
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+[[package]]
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+version = "0.1.0"
+dependencies = [
+ "clap",
+ "clap-verbosity-flag",
+ "dirs",
+ "env_logger",
+ "git2",
+ "inquire",
+ "log",
+ "serde",
+ "serde_yaml",
+ "sysinfo",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..4d16f73
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "xdbm"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+clap = { version = "4.4.0", features = ["derive"] }
+sysinfo = "0.29.8"
+log = "0.4"
+clap-verbosity-flag = "2.0.1"
+env_logger = "0.10.0"
+inquire = "0.6.2"
+git2 = "0.17.2"
+dirs = "5.0"
+serde = { version = "1.0", features = ["derive"] }
+serde_yaml = "0.9"
diff --git a/src/init.rs b/src/init.rs
new file mode 100644
index 0000000..e69de29
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..859b145
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,268 @@
+#[macro_use]
+extern crate log;
+
+extern crate dirs;
+
+use clap::{Parser, Subcommand};
+use clap_verbosity_flag::Verbosity;
+use git2::{Commit, IndexEntry, Oid, Repository};
+use inquire::{
+    validator::{StringValidator, Validation},
+    Text,
+};
+use serde::{Deserialize, Serialize};
+use serde_yaml;
+use std::fs::{File, OpenOptions};
+use std::io::prelude::*;
+use std::io::{self, BufWriter};
+use std::{env, io::BufReader, path::Path};
+use sysinfo::{System, SystemExt};
+
+#[derive(Parser)]
+#[command(author, version, about, long_about = None)]
+struct Cli {
+    #[command(subcommand)]
+    command: Commands,
+
+    #[command(flatten)]
+    verbose: Verbosity,
+}
+
+#[derive(Subcommand)]
+enum Commands {
+    /// Initialize
+    Init {
+        repo: Option<String>, // url?
+    },
+
+    /// Print config dir.
+    Path {},
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+struct Device {
+    name: String,
+    os_name: String,
+    os_version: String,
+    hostname: String,
+}
+
+const DEVICESFILE: &str = "devices.yml";
+
+struct Storage {}
+
+struct BackupLog {}
+
+impl Device {
+    fn new(name: String) -> Device {
+        let sys = System::new();
+        Device {
+            name: name,
+            os_name: sys.name().unwrap_or_else(|| {
+                warn!("Failed to get OS name. Saving as \"unknown\".");
+                "unknown".to_string()
+            }),
+            os_version: sys.os_version().unwrap_or_else(|| {
+                warn!("Failed to get OS version. Saving as \"unknown\".");
+                "unknown".to_string()
+            }),
+            hostname: sys.host_name().unwrap_or_else(|| {
+                warn!("Failed to get hostname. Saving as \"unknown\".");
+                "unknown".to_string()
+            }),
+        }
+    }
+}
+
+fn main() -> Result<(), String> {
+    let cli = Cli::parse();
+    env_logger::Builder::new()
+        .filter_level(cli.verbose.log_level_filter())
+        .init();
+    trace!("Start logging...");
+
+    let mut config_dir = match dirs::config_local_dir() {
+        Some(dir) => dir,
+        None => return Err("Failed to get config dir.".to_string()),
+    };
+    config_dir.push("xdbm");
+    trace!("Config dir: {:?}", config_dir);
+
+    match cli.command {
+        Commands::Init { repo } => {
+            // get repo or initialize it
+            let repo = match repo {
+                Some(repo) => {
+                    trace!("repo: {}", repo);
+                    unimplemented!("Need to use git2"); // TODO
+                }
+                None => {
+                    trace!("No repo provided");
+                    println!("Initializing for the first device...");
+
+                    // create repository
+                    let repo = match Repository::init(&config_dir) {
+                        Ok(repo) => repo,
+                        Err(e) => return Err(e.to_string()),
+                    };
+
+                    // set up gitignore
+                    {
+                        let f = match File::create(&config_dir.join(".gitignore")) {
+                            Ok(f) => f,
+                            Err(e) => return Err(e.to_string()),
+                        };
+                        let mut buf = BufWriter::new(f);
+                        match buf.write("devname".as_bytes()) {
+                            Ok(_)  => trace!("successfully created ignore file"),
+                            Err(e) => return Err(e.to_string()),
+                        };
+                        match add_and_commit(&repo, Path::new(".gitignore"), "Add devname to gitignore.") {
+                            Ok(_) => (),
+                            Err(e) => return Err(e.to_string()),
+                        };
+                    }
+                    repo
+                }
+            };
+
+            // set device name
+            let device = set_device_name()?;
+
+            // save devname
+            let devname_path = &config_dir.join("devname");
+            {
+                let mut f = match File::create(devname_path) {
+                    Ok(f) => f,
+                    Err(e) => panic!("Failed to create devname file: {}", e),
+                };
+                let mut writer = BufWriter::new(f);
+                serde_yaml::to_writer(writer, &device.name).unwrap();
+            };
+
+            // Add new device to devices.yml
+            {
+                // let mut devices = get_devices(&config_dir)?;
+                let mut devices: Vec<Device> = vec![];
+                devices.push(device.clone());
+                trace!("Devices: {:?}", devices);
+                write_devices(&config_dir, devices)?;
+            }
+
+            // commit
+            match add_and_commit(
+                &repo,
+                &Path::new(DEVICESFILE),
+                &format!("Add new devname: {}", &device.name),
+            ) {
+                Ok(_) => (),
+                Err(e) => return Err(e.to_string()),
+            }
+        }
+        Commands::Path {} => {
+            println!("{}", &config_dir.display());
+        }
+    }
+    Ok(())
+}
+
+/// Set device name interactively.
+fn set_device_name() -> Result<Device, String> {
+    let validator = |input: &str| {
+        if input.chars().count() == 0 {
+            Ok(Validation::Invalid("Need at least 1 character.".into()))
+        } else {
+            Ok(Validation::Valid)
+        }
+    };
+
+    let device_name = Text::new("Provide the device(PC) name:")
+        .with_validator(validator)
+        .prompt();
+
+    let device_name = match device_name {
+        Ok(device_name) => {
+            println!("device name: {}", device_name);
+            device_name
+        }
+        Err(err) => {
+            println!("Error {}", err);
+            return Err(err.to_string());
+        }
+    };
+
+    let device = Device::new(device_name);
+    trace!("Device information: {:?}", device);
+    trace!("Serialized: \n{}", serde_yaml::to_string(&device).unwrap());
+
+    return Ok(device);
+}
+
+/// Get `Vec<Device>` from yaml file in `config_dir`.
+fn get_devices(config_dir: &Path) -> Result<Vec<Device>, String> {
+    trace!("get_devices");
+    let f = match File::open(config_dir.join(DEVICESFILE)) {
+        Ok(f) => f,
+        Err(e) => return Err(e.to_string()),
+    };
+    let reader = BufReader::new(f);
+    let yaml: Vec<Device> = match serde_yaml::from_reader(reader) {
+        Ok(yaml) => yaml,
+        Err(e) => return Err(e.to_string()),
+    };
+    return Ok(yaml);
+}
+
+/// Write `devices` to yaml file in `config_dir`.
+fn write_devices(config_dir: &Path, devices: Vec<Device>) -> Result<(), String> {
+    trace!("write_devices");
+    let f = match OpenOptions::new().create(true).write(true).open(config_dir.join(DEVICESFILE)) {
+        Ok(f) => f,
+        Err(e) => return Err(e.to_string()),
+    };
+    let writer = BufWriter::new(f);
+    match serde_yaml::to_writer(writer, &devices) {
+        Ok(()) => Ok(()),
+        Err(e) => Err(e.to_string()),
+    }
+}
+
+fn find_last_commit(repo: &Repository) -> Result<Option<Commit>, git2::Error> {
+    if repo.is_empty()? {
+        Ok(None)
+    } else {
+        let commit = repo
+            .head()?
+            .resolve()?
+            .peel(git2::ObjectType::Commit)?
+            .into_commit()
+            .map_err(|_| git2::Error::from_str("Couldn't find commit"))?;
+        Ok(Some(commit))
+    }
+}
+
+/// Add file and commit
+fn add_and_commit(repo: &Repository, path: &Path, message: &str) -> Result<Oid, git2::Error> {
+    let mut index = repo.index()?;
+    index.add_path(path)?;
+    let oid = index.write_tree()?;
+    let config = git2::Config::open_default()?;
+    let signature = git2::Signature::now(
+        config.get_entry("user.name")?.value().unwrap(),
+        config.get_entry("user.email")?.value().unwrap(),
+    )?;
+    trace!("git signature: {}", signature);
+    let parent_commit = find_last_commit(&repo)?;
+    let tree = repo.find_tree(oid)?;
+    match parent_commit {
+        Some(parent_commit) => repo.commit(
+            Some("HEAD"),
+            &signature,
+            &signature,
+            message,
+            &tree,
+            &[&parent_commit],
+        ),
+        None => repo.commit(Some("HEAD"), &signature, &signature, message, &tree, &[]),
+    }
+}