From da8ebeea878bfd46b07e7027e7315a114289782e Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Sun, 24 Oct 2021 11:44:54 +0200
Subject: model: address: Add database interfacing code

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
---
 service-person/src/model/address.rs | 72 +++++++++++++++++++++++++++++++++----
 1 file changed, 66 insertions(+), 6 deletions(-)

diff --git a/service-person/src/model/address.rs b/service-person/src/model/address.rs
index d09240d..707545f 100644
--- a/service-person/src/model/address.rs
+++ b/service-person/src/model/address.rs
@@ -1,11 +1,71 @@
 use serde::Deserialize;
+use anyhow::Error;
+use anyhow::Result;
+use diesel::ExpressionMethods;
+use diesel::RunQueryDsl;
+use diesel::query_dsl::methods::FilterDsl;
+use diesel::Connection;
+use diesel::BoolExpressionMethods;
 
-use crate::model::*;
+use crate::db::DbPool;
+use crate::model::City;
+use crate::model::Country;
+use crate::model::Street;
+use crate::schema::address;
 
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Deserialize, diesel::Associations, diesel::Queryable, getset::CopyGetters)]
+#[belongs_to(Country)]
+#[belongs_to(City)]
+#[belongs_to(Street)]
+#[table_name = "address"]
 pub struct Address {
-    country: Country,
-    city: City,
-    street: Street,
-    number: usize,
+    id: i32,
+
+    country_id: i32,
+    city_id: i32,
+    street_id: i32,
+
+    #[getset(get_copy = "pub")]
+    addr_number: i32,
+}
+
+#[derive(Insertable)]
+#[table_name = "address"]
+struct NewAddress {
+    country_id: i32,
+    city_id: i32,
+    street_id: i32,
+    addr_number: i32,
+}
+
+impl Address {
+    pub fn create_or_fetch(db: &DbPool, country: &Country, city: &City, street: &Street, number: i32) -> Result<Self> {
+        use crate::schema;
+
+        let conn = db.get()?;
+
+        conn.transaction::<_, Error, _>(|| {
+            let new_address = NewAddress {
+                country_id: country.id,
+                city_id: city.id,
+                street_id: street.id,
+                addr_number: number,
+            };
+
+            diesel::insert_into(schema::address::table)
+                .values(&new_address)
+                .on_conflict_do_nothing()
+                .execute(&conn)?;
+
+            schema::address::table
+                .filter({
+                    schema::address::country_id.eq(country.id)
+                        .and(schema::address::city_id.eq(city.id))
+                        .and(schema::address::street_id.eq(street.id))
+                        .and(schema::address::addr_number.eq(number))
+                })
+                .first::<Address>(&conn)
+                .map_err(Error::from)
+        })
+    }
 }
-- 
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