From a6186975b2e8fa07f74a07db90c42878ffca77ff Mon Sep 17 00:00:00 2001
From: timvisee <timvisee@gmail.com>
Date: Sun, 29 Apr 2018 23:20:10 +0200
Subject: [PATCH] Render file expiry time and secret in history view

---
 api/src/file/remote_file.rs | 20 +++++++++++++--
 cli/src/action/history.rs   | 12 ++++++++-
 cli/src/util.rs             | 51 +++++++++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+), 3 deletions(-)

diff --git a/api/src/file/remote_file.rs b/api/src/file/remote_file.rs
index 0b0f6e9..612877b 100644
--- a/api/src/file/remote_file.rs
+++ b/api/src/file/remote_file.rs
@@ -6,9 +6,8 @@ use url::{
     ParseError as UrlParseError,
     Url,
 };
-use self::chrono::{DateTime, Utc};
+use self::chrono::{DateTime, Duration, Utc};
 use self::regex::Regex;
-use time::Duration;
 use url_serde;
 
 use config::SEND_DEFAULT_EXPIRE_TIME;
@@ -157,6 +156,23 @@ impl RemoteFile {
         &self.id
     }
 
+    /// Get the duration the file will expire after,
+    /// if an expiry time is known.
+    /// Otherwise `None` is returned.
+    pub fn expire_duration(&self) -> Option<Duration> {
+        self.expire_at.as_ref().map(|time| {
+            // Get the current time
+            let now = Utc::now();
+
+            // Return the duration if not expired, otherwise return zero
+            if time > &now {
+                *time - now
+            } else {
+                Duration::zero()
+            }
+        })
+    }
+
     /// Set the time this file will expire at.
     /// None may be given if the expire time is unknown.
     pub fn set_expire_at(&mut self, expire_at: Option<DateTime<Utc>>) {
diff --git a/cli/src/action/history.rs b/cli/src/action/history.rs
index 86b4fbb..6b4c60e 100644
--- a/cli/src/action/history.rs
+++ b/cli/src/action/history.rs
@@ -18,6 +18,7 @@ use history::{
     History as HistoryManager,
     LoadError as HistoryLoadError,
 };
+use util::format_duration;
 
 /// A history action.
 pub struct History<'a> {
@@ -61,14 +62,23 @@ impl<'a> History<'a> {
             Cell::new("#"),
             Cell::new("FILE ID"),
             Cell::new("URL"),
+            Cell::new("EXPIRY"),
         ]));
 
         // Add an entry for each file
         for (i, file) in history.files().iter().enumerate() {
+            // Build the expiry time string
+            let expiry = match file.expire_duration() {
+                Some(ref expire) => format_duration(expire),
+                None => "?".into(),
+            };
+
+            // Add the row
             table.add_row(Row::new(vec![
                 Cell::new(&format!("{}", i + 1)),
                 Cell::new(file.id()),
-                Cell::new(file.download_url(false).as_str()),
+                Cell::new(file.download_url(true).as_str()),
+                Cell::new(&expiry),
             ]));
         }
 
diff --git a/cli/src/util.rs b/cli/src/util.rs
index 19afcca..cfa34fc 100644
--- a/cli/src/util.rs
+++ b/cli/src/util.rs
@@ -21,6 +21,7 @@ use self::colored::*;
 use failure::{err_msg, Fail};
 use ffsend_api::url::Url;
 use rpassword::prompt_password_stderr;
+use time::Duration;
 
 use cmd::matcher::MainMatcher;
 
@@ -442,6 +443,56 @@ pub fn format_bytes(bytes: u64) -> String {
     }
 }
 
+/// Format the given duration in a human readable format.
+/// This method builds a string of time components to represent
+/// the given duration.
+///
+/// The following time units are used:
+/// - `w`: weeks
+/// - `d`: days
+/// - `h`: hours
+/// - `m`: minutes
+/// - `s`: seconds
+///
+/// Only the two most significant units are returned.
+/// If the duration is zero seconds or less `now` is returned.
+///
+/// The following time strings may be produced:
+/// - `8w6d`
+/// - `23h14m`
+/// - `9m55s`
+/// - `1s`
+/// - `now`
+pub fn format_duration(duration: &Duration) -> String {
+    // Get the total number of seconds, return immediately if zero or less
+    let mut secs = duration.num_seconds();
+    if secs <= 0 {
+        return "now".into();
+    }
+
+    // Build a list of time units, define a list for time components
+    let mut components = Vec::new();
+    let units = [
+        (1 * 60 * 60 * 24 * 7, "w"),
+        (1 * 60 * 60 * 24, "d"),
+        (1 * 60 * 60, "h"),
+        (1 * 60, "m"),
+        (1, "s"),
+    ];
+
+    // Fill the list of time components based on the units which fit
+    for unit in units.iter() {
+        if secs >= unit.0 {
+            components.push(format!("{}{}", secs / unit.0, unit.1));
+            secs %= unit.0;
+        }
+    }
+
+    // Show only the two most significant components and join them in a string
+    components.truncate(2);
+    components.join("")
+}
+
 /// Get the name of the executable that was invoked.
 pub fn exe_name() -> String {
     current_exe()