From f03dc86b2af24b133bc85f05941c9819ce6cd83b Mon Sep 17 00:00:00 2001
From: Andy Wortman <ixineeringeverywhere@gmail.com>
Date: Sun, 31 Dec 2017 04:49:49 -0800
Subject: clean up DM support, add thing to send DMs

---
 src/commands/dm.rs  | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/commands/mod.rs |  2 ++
 src/display/mod.rs  | 19 ++++++++++++++-----
 src/tw/mod.rs       |  8 ++++++--
 4 files changed, 75 insertions(+), 7 deletions(-)
 create mode 100644 src/commands/dm.rs

diff --git a/src/commands/dm.rs b/src/commands/dm.rs
new file mode 100644
index 0000000..95f65b7
--- /dev/null
+++ b/src/commands/dm.rs
@@ -0,0 +1,53 @@
+use display::DisplayInfo;
+use tw;
+use ::Queryer;
+
+use tw::TweetId;
+
+use commands::Command;
+
+static DM_CREATE_URL: &str = "https://api.twitter.com/1.1/direct_messages/new.json";
+
+pub static DM: Command = Command {
+    keyword: "dm",
+    params: 1,
+    exec: dm,
+    param_str: " <user_handle>",
+    help_str: "Send DM to <user_handle>"
+};
+
+fn dm(line: String, tweeter: &mut tw::TwitterCache, queryer: &mut Queryer, display_info: &mut DisplayInfo) {
+    let user_profile = match tweeter.current_profile().map(|profile| profile.to_owned()) {
+        Some(profile) => profile,
+        None => {
+            display_info.status("To send a DM you must be an authenticated user.".to_owned());
+            return;
+        }
+    };
+    let mut text: String = line.trim().to_string();
+    let text_bare = match text.find(" ") {
+        None => "".to_owned(),
+        Some(id_end_idx) => {
+            text.split_off(id_end_idx + 1)
+        }
+    };
+    let dm_text = text_bare.trim();
+    let handle_chars = text.trim().chars().collect::<Vec<char>>();
+    let normalized_handle = if handle_chars[0] == '@' {
+        handle_chars[1..].to_vec()
+    } else {
+        handle_chars
+    }.into_iter().collect::<String>();
+
+    let encoded = ::url_encode(dm_text);
+    let result = match tweeter.current_profile() {
+        Some(user_profile) => {
+            queryer.do_api_post(&format!("{}?text={}&screen_name={}", DM_CREATE_URL, encoded, normalized_handle), &tweeter.app_key, &user_profile.creds)
+        },
+        None => Err("No logged in user to DM as".to_owned())
+    };
+    match result {
+        Ok(_) => (),
+        Err(e) => display_info.status(e)
+    }
+}
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
index e8a725b..8108a78 100644
--- a/src/commands/mod.rs
+++ b/src/commands/mod.rs
@@ -10,6 +10,7 @@ pub struct Command {
     pub help_str: &'static str
 }
 
+pub mod dm;
 pub mod help;
 pub mod auth;
 pub mod show_cache;
@@ -23,6 +24,7 @@ pub mod thread;
 pub mod profile;
 
 pub static COMMANDS: &[&Command] = &[
+    &dm::DM,
     &profile::PROFILE,
     &profile::PROFILES,
     &help::HELP,
diff --git a/src/display/mod.rs b/src/display/mod.rs
index 6115472..098bb1c 100644
--- a/src/display/mod.rs
+++ b/src/display/mod.rs
@@ -27,7 +27,7 @@ pub enum Infos {
     TweetWithContext(TweetId, String),
     Thread(Vec<TweetId>),
     Event(tw::events::Event),
-    DM(String),
+    DM(String, String, String),
     User(tw::user::User),
     Text(Vec<String>)
 }
@@ -549,10 +549,8 @@ pub fn paint(tweeter: &::tw::TwitterCache, display_info: &mut DisplayInfo) -> Re
                         };
                         wrapped.into_iter().rev().collect()
                     },
-                    Infos::DM(msg) => {
-                        let mut lines = vec![format!("{}{}{} DM:", cursor::Goto(1, height - h), clear::CurrentLine, "from")];
-                        lines.push(msg);
-                        lines
+                    Infos::DM(msg, from_id, to_id) => {
+                        into_display_lines(render_dm(msg, from_id, to_id, tweeter, display_info, width), width).into_iter().rev().collect()
                     }
                     Infos::User(user) => {
                         vec![
@@ -703,6 +701,17 @@ fn short_display_summary(u: &tw::user::User) -> String {
     )
 }
 
+pub fn render_dm(text: String, from_id: String, to_id: String, tweeter: &tw::TwitterCache, display_info: &mut DisplayInfo, width: u16) -> Vec<String> {
+    let from_user = tweeter.retrieve_user(&from_id).unwrap().clone();
+    let to_user = tweeter.retrieve_user(&to_id).unwrap().clone();
+
+    let mut lines = pad_lines(into_display_lines(text.split("\n").map(|x| x.to_owned()).collect(), width - 2), "  ");
+    let envelope = format!("DM: {} -> {}", short_display_summary(&from_user), short_display_summary(&to_user));
+
+    lines.insert(0, envelope);
+    lines
+}
+
 pub fn render_twete(twete_id: &TweetId, tweeter: &tw::TwitterCache,  display_info: &mut DisplayInfo, width: Option<u16>) -> Vec<String> {
     let mut lines = render_twete_no_recurse(twete_id, tweeter, display_info, width);
     match tweeter.retrieve_tweet(twete_id).map(|x| x.clone()) {
diff --git a/src/tw/mod.rs b/src/tw/mod.rs
index 2eb574f..9a14b11 100644
--- a/src/tw/mod.rs
+++ b/src/tw/mod.rs
@@ -1200,8 +1200,12 @@ fn handle_twitter_dm(
     display_info: &mut DisplayInfo,
     _queryer: &mut ::Queryer) {
     // show DM
-    display_info.recv(display::Infos::Text(vec![format!("{:?}", structure)]));
-    display_info.recv(display::Infos::DM(structure["direct_message"]["text"].as_str().unwrap().to_string()));
+    tweeter.cache_api_user(structure["direct_message"]["recipient"].clone());
+    tweeter.cache_api_user(structure["direct_message"]["sender"].clone());
+    let dm_text = structure["direct_message"]["text"].as_str().unwrap().to_string();
+    let to = structure["direct_message"]["recipient_id_str"].as_str().unwrap().to_string();
+    let from = structure["direct_message"]["sender_id_str"].as_str().unwrap().to_string();
+    display_info.recv(display::Infos::DM(dm_text, from, to));
 }
 
 fn handle_twitter_welcome(
-- 
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