Implement the database tables and queries

resources/migrations/20170216222925-add-users-table.down.sql

@@ -1 +0,0 @@
-DROP TABLE users;

resources/migrations/20170216222925-add-users-table.up.sql

@@ -1,9 +0,0 @@
-CREATE TABLE users
-(id VARCHAR(20) PRIMARY KEY,
- first_name VARCHAR(30),
- last_name VARCHAR(30),
- email VARCHAR(30),
- admin BOOLEAN,
- last_login TIME,
- is_active BOOLEAN,
- pass VARCHAR(300));

resources/migrations/20170302232609-create-initial-structure.down.sql

@@ -0,0 +1,13 @@
+DROP TABLE images;
+
+--;;
+
+DROP TABLE tags;
+
+--;;
+
+DROP TABLE image_tags;
+
+--;;
+
+DROP TABLE comments;

resources/migrations/20170302232609-create-initial-structure.up.sql

@@ -0,0 +1,39 @@
+CREATE TABLE images (
+       id INTEGER PRIMARY KEY AUTOINCREMENT,
+       hash TEXT NOT NULL UNIQUE,
+       title TEXT,
+       description TEXT,
+       created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+--;;
+
+CREATE TABLE tags (
+       id INTEGER PRIMARY KEY AUTOINCREMENT,
+       tagname TEXT NOT NULL UNIQUE
+);
+
+--;;
+
+CREATE TABLE image_tags (
+       id INTEGER PRIMARY KEY AUTOINCREMENT,
+       image_id INTEGER NOT NULL,
+       tag_id INTEGER NOT NULL
+)
+
+--;;
+
+CREATE TABLE comments (
+       id INTEGER PRIMARY KEY AUTOINCREMENT,
+       image_id INTEGER NOT NULL,
+       author TEXT,
+       comment TEXT NOT NULL,
+       created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+--;;
+
+CREATE INDEX hash_index ON images (hash);
+CREATE INDEX tagname_index ON tags (tagname);
+CREATE INDEX image_tags_index ON image_tags (image_id, tag_id);
+CREATE INDEX author_index ON comments (author);

resources/sql/queries.sql

@@ -1,21 +1,48 @@
--- :name create-user! :! :n
+-- :name create-image! :! :n
--- :doc creates a new user record
+INSERT INTO images (hash, title, description)
-INSERT INTO users
+VALUES (:hash, :title, :description)
-(id, first_name, last_name, email, pass)
-VALUES (:id, :first_name, :last_name, :email, :pass)
 
--- :name update-user! :! :n
+-- :name update-image! :! :n
--- :doc update an existing user record
+UPDATE images
-UPDATE users
+SET hash = :hash, title = :title, description = :description
-SET first_name = :first_name, last_name = :last_name, email = :email
 WHERE id = :id
 
--- :name get-user :? :1
+-- :name get-image :? :1
--- :doc retrieve a user given the id.
+SELECT * FROM images WHERE id = :id
-SELECT * FROM users
+
+-- :name delete-image! :! :n
+DELETE FROM image
 WHERE id = :id
 
--- :name delete-user! :! :n
+
--- :doc delete a user given the id
+-- :name create-tag! :! :n
-DELETE FROM users
+INSERT OR IGNORE INTO tags (tagname)
-WHERE id = :id
+VALUES (:tagname)
+
+-- :name get-tags-for-image :? :n
+SELECT tags.tagname FROM image_tags
+INNER JOIN tags ON tags.id = image_tags.tag_id
+WHERE image_id = :id
+ORDER BY tags.tagname ASC
+
+-- :name get-images-for-tagname :? :n
+SELECT images.* FROM image_tags
+INNER JOIN images ON images.id = image_tags.image_id
+INNER JOIN tags on tags.id = image_tags.tag_id
+WHERE tags.tagname = :tagname
+ORDER BY images.created_at DESC
+
+
+-- :name create-comment! :! :n
+INSERT INTO comments (image_id, author, comment)
+VALUES (:image_id, :author, :comment)
+
+-- :name get-comments-for-image :? :n
+SELECT * FROM comments
+WHERE image_id = :image_id
+ORDER BY created_at DESC
+
+-- :name get-recent-comments
+SELECT * FROM comments
+ORDER BY created_at DESC
+LIMIT :num-comments