From d097f363131ddb5be865a26f8cc675eb40750111 Mon Sep 17 00:00:00 2001
From: jude <judewrs@gmail.com>
Date: Sun, 30 Aug 2020 00:16:33 +0100
Subject: [PATCH] starting on time parser port from python

---
 src/commands/moderation_cmds.rs |  12 ++++
 src/main.rs                     |   1 +
 src/time_parser.rs              | 121 ++++++++++++++++++++++++++++++++
 3 files changed, 134 insertions(+)
 create mode 100644 src/time_parser.rs

diff --git a/src/commands/moderation_cmds.rs b/src/commands/moderation_cmds.rs
index b91042c..1bdc745 100644
--- a/src/commands/moderation_cmds.rs
+++ b/src/commands/moderation_cmds.rs
@@ -143,3 +143,15 @@ async fn prefix(ctx: &Context, msg: &Message, args: String) -> CommandResult {
 
     Ok(())
 }
+
+#[command]
+async fn pause(ctx: &Context, msg: &Message, args: String) -> CommandResult {
+    let pool = ctx.data.read().await
+        .get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
+
+    let channel = ChannelData::from_channel(msg.channel(&ctx).await.unwrap(), pool.clone()).await.unwrap(),
+
+    channel.commit_changes(pool).await;
+
+    Ok(())
+}
diff --git a/src/main.rs b/src/main.rs
index fcb78b7..32e0b23 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,6 +4,7 @@ extern crate lazy_static;
 mod models;
 mod framework;
 mod commands;
+mod time_parser;
 
 use serenity::{
     client::{
diff --git a/src/time_parser.rs b/src/time_parser.rs
new file mode 100644
index 0000000..6ca16a5
--- /dev/null
+++ b/src/time_parser.rs
@@ -0,0 +1,121 @@
+use std::time::{
+    SystemTime,
+    UNIX_EPOCH,
+};
+
+use chrono_tz::Tz;
+
+enum ParseType {
+    Explicit,
+    Displacement,
+}
+
+struct TimeParser {
+    timezone: Tz,
+    inverted: bool,
+    time_string: String,
+    parse_type: ParseType,
+}
+
+impl TimeParser {
+    pub fn new(input: String, timezone: Tz) -> Self {
+        let inverted = if input.starts_with("-") {
+            true
+        }
+        else {
+            false
+        };
+
+        let parse_type = if input.contains("/") || input.contains(":") {
+            ParseType::Explicit
+        }
+        else {
+            ParseType::Displacement
+        };
+
+        Self {
+            timezone,
+            inverted,
+            time_string: input.trim_start_matches("-").to_string(),
+            parse_type,
+        }
+    }
+
+    pub fn timestamp(&self) -> i32 {
+
+    }
+
+    pub fn displacement(&self) -> i32 {
+
+    }
+
+    fn process(&self) -> i32 {
+        match self.parse_type {
+            ParseType::Explicit => {
+                self.process_explicit()
+            },
+
+            ParseType::Displacement => {
+                let now = SystemTime::now();
+                let since_epoch = now
+                    .duration_since(UNIX_EPOCH)
+                    .expect("Time calculated as going backwards. Very bad");
+
+                since_epoch.as_secs() + self.process_displacement()
+            },
+        }
+    }
+
+    fn process_explicit(&self) -> i32 {
+
+        0
+    }
+
+    fn process_displacement(&self) -> i32 {
+        let mut current_buffer = "0".to_string();
+
+        let mut seconds = 0;
+        let mut minutes = 0;
+        let mut hours = 0;
+        let mut days = 0;
+
+        for character in self.time_string.chars() {
+            match character {
+
+                's' => {
+                    seconds = current_buffer.parse::<u32>().unwrap();
+                    current_buffer = String::from("0");
+                },
+
+                'm' => {
+                    minutes = current_buffer.parse::<u32>().unwrap();
+                    current_buffer = String::from("0");
+                },
+
+                'h' => {
+                    hours = current_buffer.parse::<u32>().unwrap();
+                    current_buffer = String::from("0");
+                },
+
+                'd' => {
+                    days = current_buffer.parse::<u32>().unwrap();
+                    current_buffer = String::from("0");
+                },
+
+                c => {
+                    if c.is_digit(10) {
+                        current_buffer += c.as_str();
+                    }
+                    else {
+                        // raise exception
+                    }
+                },
+            }
+        }
+
+        let full = seconds + (minutes * 60) + (hours * 3600) + (days * 86400) + current_buffer.parse::<u32>() *
+            if self.inverted { -1 } else { 1 };
+
+        full
+    }
+}