Modifies the schema a whole lot

comments_ddl.sql

@@ -1,34 +1,73 @@
--- ATTACH DATABASE 'comments.db' AS Comments;
 
 PRAGMA FOREIGN_KEYS = ON;
 
-
+-- tables
+DROP TABLE IF EXISTS COMMENT;
 DROP TABLE IF EXISTS CHANNEL;
 CREATE TABLE IF NOT EXISTS CHANNEL(
     ClaimId     TEXT    NOT NULL,
     Name        TEXT    NOT NULL,
-    Timestamp   INTEGER      DEFAULT NULL,
     CONSTRAINT CHANNEL_PK PRIMARY KEY (ClaimId)
-        ON CONFLICT IGNORE,
+        ON CONFLICT IGNORE
-    CONSTRAINT CHANNEL_NAME_LEN
-        CHECK ( 0 < length(Name) AND length(Name) <= 120)
 );
 
 
-
-
-
 DROP TABLE IF EXISTS COMMENT;
 CREATE TABLE IF NOT EXISTS COMMENT (
-    CommentId   INTEGER NOT NULL,
+    CommentId   TEXT    NOT NULL,
     LbryClaimId TEXT    NOT NULL,
-    ChannelId   TEXT    NOT NULL,
+    ChannelId   TEXT                DEFAULT NULL,
     Body        TEXT    NOT NULL,
-    ParentId    INTEGER          DEFAULT NULL,
+    ParentId    TEXT                DEFAULT NULL,
-    Timestamp   DATETIME,
+    Signature   TEXT                DEFAULT NULL,
-    CONSTRAINT COMMENT_ID_PK PRIMARY KEY (CommentId)
+    Timestamp   INTEGER NOT NULL,
-        ON CONFLICT ABORT,
+    CONSTRAINT COMMENT_PRIMARY_KEY PRIMARY KEY (CommentId) ON CONFLICT IGNORE,
+    CONSTRAINT COMMENT_SIGNATURE_SK UNIQUE (Signature) ON CONFLICT ABORT,
+    CONSTRAINT COMMENT_CHANNEL_FK FOREIGN KEY (ChannelId) REFERENCES CHANNEL(ClaimId)
+        ON DELETE NO ACTION ON UPDATE NO ACTION,
     CONSTRAINT COMMENT_PARENT_FK FOREIGN KEY (ParentId) REFERENCES COMMENT(CommentId)
-        ON UPDATE CASCADE ON DELETE NO ACTION,  -- setting null implies comment is top level
+        ON UPDATE CASCADE ON DELETE NO ACTION  -- setting null implies comment is top level
-    CONSTRAINT COMMENT_BODY_LEN CHECK(1 < length(Body) AND length(Body) <= 2000)
 );
+
+-- indexes
+DROP INDEX IF EXISTS COMMENT_CLAIM_INDEX;
+CREATE INDEX COMMENT_CLAIM_INDEX ON COMMENT (LbryClaimId);
+
+-- triggers
+DROP TRIGGER IF EXISTS CHANNEL_INSERT_VALIDATE;
+CREATE TRIGGER CHANNEL_INSERT_VALIDATE
+    BEFORE INSERT ON CHANNEL
+    WHEN NOT (0 < LENGTH(NEW.Name AND LENGTH(NEW.Name) < 256))
+    BEGIN
+        SELECT RAISE(FAIL, 'EITHER CHANNEL_ID OR CHANNEL_NAME ARE INVALID LENGTH');
+    END;
+
+-- todo: remove this shit
+DROP TRIGGER IF EXISTS COMMENT_INSERT_VALIDATE;
+CREATE TRIGGER COMMENT_INSERT_VALIDATE
+    BEFORE INSERT ON COMMENT
+    WHEN NOT (0 < LENGTH(NEW.Body) AND LENGTH(NEW.Body) <= 2000)
+    BEGIN
+        SELECT RAISE(FAIL, 'INVALID COMMENT BODY LENGTH');
+    end;
+
+-- VIEWS
+DROP VIEW IF EXISTS COMMENTS_ON_CLAIMS;
+CREATE VIEW COMMENTS_ON_CLAIMS (comment_id, claim_id, timestamp, channel_name, channel_id, channel_uri, comment, parent_id) AS
+    SELECT C.CommentId, C.LbryClaimId, C.Timestamp, CHAN.Name, CHAN.ClaimId, 'lbry://' || '@' || CHAN.Name || '#' || CHAN.ClaimId, C.Body, C.ParentId
+    FROM CHANNEL AS CHAN
+    INNER JOIN COMMENT C on CHAN.ClaimId = C.ChannelId
+    ORDER BY C.Timestamp;
+
+
+
+DROP VIEW IF EXISTS COMMENT_REPLIES;
+CREATE VIEW COMMENT_REPLIES (Author, CommentBody, ParentAuthor, ParentCommentBody) AS
+    SELECT AUTHOR.Name, OG.Body, PCHAN.Name, PARENT.Body FROM COMMENT AS OG
+        JOIN  COMMENT AS PARENT
+        ON OG.ParentId = PARENT.CommentId
+        JOIN CHANNEL AS PCHAN ON PARENT.ChannelId = PCHAN.ClaimId
+        JOIN CHANNEL AS AUTHOR ON OG.ChannelId = AUTHOR.ClaimId
+        ORDER BY OG.Timestamp;
+
+