mirror of
https://github.com/soywod/himalaya.git
synced 2024-07-08 18:45:13 +00:00
169 lines
4.8 KiB
Rust
169 lines
4.8 KiB
Rust
use error_chain::error_chain;
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use log::{debug, error, trace};
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use std::{
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env,
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fs::{self, File},
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io::{self, Read, Write},
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path::PathBuf,
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process::Command,
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};
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error_chain! {
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foreign_links {
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Utf8(std::string::FromUtf8Error);
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}
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}
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fn draft_path() -> PathBuf {
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env::temp_dir().join("himalaya-draft.mail")
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}
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pub fn remove_draft() -> Result<()> {
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debug!("[input] remove draft");
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let draft_path = draft_path();
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debug!("[input] draft path: {:?}", draft_path);
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fs::remove_file(&draft_path)
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.chain_err(|| format!("Could not delete draft file {:?}", draft_path))
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}
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pub fn open_editor_with_tpl(tpl: &[u8]) -> Result<String> {
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debug!("[input] open editor with tpl");
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trace!("{}", String::from_utf8(tpl.to_vec())?);
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let draft_path = draft_path();
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debug!("[input] draft path: {:?}", draft_path);
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if draft_path.exists() {
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debug!("[input] draft found");
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loop {
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match pre_edit_choice() {
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Ok(choice) => match choice {
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PreEditChoice::Edit => return open_editor_with_draft(),
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PreEditChoice::Discard => break,
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PreEditChoice::Quit => return Err("Edition aborted".into()),
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},
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Err(err) => error!("{}", err),
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}
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}
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}
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debug!("[input] create draft");
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File::create(&draft_path)
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.chain_err(|| format!("Could not create draft file {:?}", draft_path))?
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.write(tpl)
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.chain_err(|| format!("Could not write draft file {:?}", draft_path))?;
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debug!("[input] open editor");
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Command::new(env::var("EDITOR").chain_err(|| "Could not find `EDITOR` env var")?)
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.arg(&draft_path)
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.status()
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.chain_err(|| "Could not launch editor")?;
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debug!("[input] read draft");
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let mut draft = String::new();
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File::open(&draft_path)
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.chain_err(|| format!("Could not open draft file {:?}", draft_path))?
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.read_to_string(&mut draft)
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.chain_err(|| format!("Could not read draft file {:?}", draft_path))?;
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Ok(draft)
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}
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pub fn open_editor_with_draft() -> Result<String> {
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debug!("[input] open editor with draft");
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let draft_path = draft_path();
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debug!("[input] draft path: {:?}", draft_path);
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// Opens editor and saves user input to draft file
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Command::new(env::var("EDITOR").chain_err(|| "Could not find `EDITOR` env var")?)
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.arg(&draft_path)
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.status()
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.chain_err(|| "Could not launch editor")?;
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// Extracts draft file content
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let mut draft = String::new();
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File::open(&draft_path)
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.chain_err(|| format!("Could not open file {:?}", draft_path))?
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.read_to_string(&mut draft)
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.chain_err(|| format!("Could not read file {:?}", draft_path))?;
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Ok(draft)
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}
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pub enum PreEditChoice {
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Edit,
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Discard,
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Quit,
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}
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pub fn pre_edit_choice() -> Result<PreEditChoice> {
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debug!("[input] pre edit choice");
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println!("A draft was found:");
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print!("(e)dit, (d)iscard or (q)uit? ");
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io::stdout()
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.flush()
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.chain_err(|| "Could not flush stdout")?;
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let mut buf = String::new();
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io::stdin()
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.read_line(&mut buf)
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.chain_err(|| "Could not read stdin")?;
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match buf.bytes().next().map(|bytes| bytes as char) {
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Some('e') => {
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debug!("[input] pre edit choice: edit matched");
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Ok(PreEditChoice::Edit)
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}
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Some('d') => {
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debug!("[input] pre edit choice: discard matched");
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Ok(PreEditChoice::Discard)
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}
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Some('q') => {
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debug!("[input] pre edit choice: quit matched");
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Ok(PreEditChoice::Quit)
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}
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Some(choice) => {
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debug!("[input] pre edit choice: invalid choice {}", choice);
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Err(format!("Invalid choice `{}`", choice).into())
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}
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None => {
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debug!("[input] pre edit choice: empty choice");
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Err("Empty choice".into())
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}
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}
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}
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pub enum PostEditChoice {
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Send,
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Edit,
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LocalDraft,
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RemoteDraft,
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Discard,
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}
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pub fn post_edit_choice() -> Result<PostEditChoice> {
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print!("(s)end, (e)dit, (l)ocal/(r)emote draft or (d)iscard? ");
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io::stdout()
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.flush()
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.chain_err(|| "Could not flush stdout")?;
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let mut buf = String::new();
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io::stdin()
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.read_line(&mut buf)
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.chain_err(|| "Could not read stdin")?;
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match buf.bytes().next().map(|bytes| bytes as char) {
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Some('s') => Ok(PostEditChoice::Send),
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Some('l') => Ok(PostEditChoice::LocalDraft),
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Some('r') => Ok(PostEditChoice::RemoteDraft),
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Some('e') => Ok(PostEditChoice::Edit),
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Some('d') => Ok(PostEditChoice::Discard),
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Some(choice) => Err(format!("Invalid choice `{}`", choice).into()),
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None => Err("Empty choice".into()),
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}
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}
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