offset command. fix for timeparser not doing negatives properly on specified fields

src/commands/reminder_cmds.rs

@@ -13,6 +13,7 @@ use serenity::{
 use crate::{
     models::{
         ChannelData,
+        GuildData,
         UserData,
     },
     SQLPool,
@@ -65,3 +66,53 @@ async fn pause(ctx: &Context, msg: &Message, args: String) -> CommandResult {
 
     Ok(())
 }
+
+#[command]
+async fn offset(ctx: &Context, msg: &Message, args: String) -> CommandResult {
+    let pool = ctx.data.read().await
+        .get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
+
+    let user_data = UserData::from_id(&msg.author, &ctx, &pool).await.unwrap();
+
+    if args.len() == 0 {
+        let _ = msg.channel_id.say(&ctx, user_data.response(&pool, "offset/help").await).await;
+    }
+    else {
+        let parser = TimeParser::new(args, user_data.timezone());
+
+        if let Ok(displacement) = parser.displacement() {
+            if let Some(guild) = msg.guild(&ctx).await {
+                let guild_data = GuildData::from_guild(guild, &pool).await.unwrap();
+
+                sqlx::query!(
+                    "
+UPDATE reminders
+    INNER JOIN `channels`
+        ON `channels`.id = reminders.channel_id
+    SET
+        reminders.`time` = reminders.`time` + ?
+    WHERE channels.guild_id = ?
+                    ", displacement, guild_data.id)
+                    .execute(&pool)
+                    .await
+                    .unwrap();
+            } else {
+                sqlx::query!(
+                    "
+UPDATE reminders SET `time` = `time` + ? WHERE reminders.channel_id = ?
+                    ", displacement, user_data.dm_channel)
+                    .execute(&pool)
+                    .await
+                    .unwrap();
+            }
+
+            let response = user_data.response(&pool, "offset/success").await.replacen("{}", &displacement.to_string(), 1);
+
+            let _ = msg.channel_id.say(&ctx, response).await;
+        } else {
+            let _ = msg.channel_id.say(&ctx, user_data.response(&pool, "offset/invalid_time").await).await;
+        }
+    }
+
+    Ok(())
+}

src/main.rs

@@ -63,12 +63,16 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
         .add_command("donate", &info_cmds::DONATE_COMMAND)
         .add_command("dashboard", &info_cmds::DASHBOARD_COMMAND)
         .add_command("clock", &info_cmds::CLOCK_COMMAND)
+
         .add_command("todo", &todo_cmds::TODO_PARSE_COMMAND)
+
         .add_command("blacklist", &moderation_cmds::BLACKLIST_COMMAND)
         .add_command("timezone", &moderation_cmds::TIMEZONE_COMMAND)
         .add_command("prefix", &moderation_cmds::PREFIX_COMMAND)
         .add_command("lang", &moderation_cmds::LANGUAGE_COMMAND)
+
         .add_command("pause", &reminder_cmds::PAUSE_COMMAND)
+        .add_command("offset", &reminder_cmds::OFFSET_COMMAND)
         .build();
 
     let mut client = Client::new(&env::var("DISCORD_TOKEN").expect("Missing DISCORD_TOKEN from environment"))

src/models.rs

@@ -10,8 +10,10 @@ use serenity::{
 use sqlx::MySqlPool;
 use chrono::NaiveDateTime;
 
+use chrono_tz::Tz;
+
 pub struct GuildData {
-    id: u32,
+    pub id: u32,
     guild: u64,
     pub name: String,
     pub prefix: String,
@@ -198,4 +200,8 @@ SELECT value FROM strings WHERE (language = ? OR language = 'EN') AND name = ? O
 
         row.value.expect("No string with that name")
     }
+
+    pub fn timezone(&self) -> Tz {
+        self.timezone.parse().unwrap()
+    }
 }

src/time_parser.rs

@@ -172,7 +172,7 @@ impl TimeParser {
             }
         }
 
-        let full = seconds + (minutes * 60) + (hours * 3600) + (days * 86400) + current_buffer.parse::<i64>().unwrap() *
+        let full = (seconds + (minutes * 60) + (hours * 3600) + (days * 86400) + current_buffer.parse::<i64>().unwrap()) *
             if self.inverted { -1 } else { 1 };
 
         Ok(full)