Make list-tweets fetch all rather than last 200

src/main.rs

@@ -9,6 +9,7 @@ use image::{DynamicImage, RgbaImage};
 use tiny_skia::{Paint, PathBuilder, Pixmap, PixmapPaint, Stroke, Transform};
 use twitter::*;
 use wiki::*;
+use std::borrow::Cow;
 
 static APP_USER_AGENT: &str = concat!(
     "bot_",
@@ -143,25 +144,41 @@ fn do_list_tweets() -> StdError<()> {
     )?
     .json::<serde_json::Value>()?;
 
-    let id = user["id"].as_u64().unwrap();
-
-    let timeline: serde_json::Value = twitter_api(
+    let id = user["id"].as_u64().unwrap().to_string();
+    let mut timeline = vec!();
+    let mut last_id: Option<u64> = None;
+    loop { 
+        event!(Level::INFO, last_id, "Fetching chunk of tweets...");
+        let mut params: Vec<(&str, Cow<str>)> = vec!(            
+            ("count", "200".into()),
+            ("exclude_replies", "true".into()),
+            ("include_rts", "false".into()),
+            ("trim_user", "true".into()),
+            ("user_id", Cow::Borrowed(&id)),
+        );
+        if let Some(since_id) = last_id {
+            // Get next chunk of tweets before those we've fetched
+            params.push(("max_id", (since_id - 1).to_string().into()))
+        }
+        let timeline_chunk = twitter_api(
             reqwest::Url::parse_with_params(
                 &TwitterEndpoint::UserTimeline.to_string(),
-            [
-                ("count", "200"),
-                ("exclude_replies", "true"),
-                ("include_retweets", "false"),
-                ("trim_user", "true"),
-                ("user_id", id.to_string().as_ref()),
-            ],
+                params,
             )?,
             Some(&user_token),
             APIAction::Get,
             &[],
         )?
-    .json()?;
-    for tweet in timeline.as_array().unwrap() {
+        .json::<serde_json::Value>()?;
+        let chunk = timeline_chunk.as_array().unwrap().to_owned();
+        event!(Level::INFO, count=chunk.len(), "Got tweets.");
+        if chunk.len() == 0 {
+            break;
+        }
+        last_id = Some(chunk.last().unwrap().as_object().unwrap()["id"].as_u64().unwrap());
+        timeline.extend(chunk);
+    }
+    for tweet in timeline {
         let tweet = tweet.as_object().unwrap();
         println!("{}, \"{}\"", tweet["id"], tweet["text"]);
     }