From eef5efc67b9f0b2eeede9a6d89d2de796634acb7 Mon Sep 17 00:00:00 2001
From: Benedict Börger <benedict@0xb8000.de>
Date: Sat, 22 Jun 2019 23:55:47 +0200
Subject: [web_frontend][transaction] implement filter syntax

---
 src/web_frontend/transactions.rs | 57 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 55 insertions(+), 2 deletions(-)

(limited to 'src/web_frontend')

diff --git a/src/web_frontend/transactions.rs b/src/web_frontend/transactions.rs
index 54aacf9..f6d65af 100644
--- a/src/web_frontend/transactions.rs
+++ b/src/web_frontend/transactions.rs
@@ -30,9 +30,62 @@ struct TransactionContext {
 	date_end : String
 }
 
+struct TransactionFilter {
+	sender_name_filter : Vec<String>,
+	reference_filter : Vec<String>
+}
+
+/*
+ * files syntax: . seperates different search critereas
+ * a search crietera is a key value pair, with key as fiter type, e.g. 
+ * sender name of transation. The value is what is should be and can be a regex
+ * key value pair is split by -
+ */
 fn apply_transaction_filter(filter : String, transactions : Vec<crate::banking::account::Transaction>) -> Vec<crate::banking::account::Transaction> {
-    let re = Regex::new(&filter).unwrap();
-    let tmp = transactions.into_iter().filter(|transaction| re.is_match(&transaction.sender_name) || re.is_match(&transaction.reference) ).collect();
+    let mut tmp = transactions.clone(); 
+    // special case if for general search
+    if !filter.to_string().contains(".") {
+	    println!("in special case");
+	    let re = Regex::new(&filter).unwrap();
+	    tmp = transactions.into_iter().filter(|transaction| re.is_match(&transaction.sender_name) || re.is_match(&transaction.reference) ).collect();
+	    return tmp;
+    }
+
+    // parse filter string and construct TransactionFilter struct
+    let mut sender_name_vec = Vec::new();
+    let mut reference_vec = Vec::new();
+    for entry in filter.to_string().split(".") {
+	    let v : Vec<_> = entry.split("-").collect();
+	    println!("{:?}", v);
+	    if v.len() > 1 {
+		if v[0] == "sender" {
+			println!("Filter for sender_name");
+			sender_name_vec.push(v[1].to_string());
+		}
+		else if v[0] == "reference" {
+			println!("filter for reference");
+			reference_vec.push(v[1].to_string());
+		}
+	    }
+
+    }
+	tmp = transactions.clone().into_iter().filter(|transaction| { 
+		let mut sender_match = false;
+		let mut reference_match = false;
+		for sender in &sender_name_vec {
+			let re_sender = Regex::new(&sender).unwrap();
+			if re_sender.is_match(&transaction.sender_name) {
+				sender_match = true;
+			}
+		}
+		for reference in &reference_vec {
+			let re = Regex::new(&reference).unwrap();
+			if re.is_match(&transaction.reference) {
+				reference_match = true;
+			}
+		}
+		sender_match || reference_match
+	}).collect();
     tmp
 
 }
-- 
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