-- 5

-- This file creates tables containing user-specific data -- any changes
-- to existing tables made here must be mirrored in transition steps in
-- schema.js::_migrateSchema() -- however, new tables can be added by simply
-- adding a CREATE TABLE IF NOT EXISTS statement and incrementing the version
-- number above


CREATE TABLE IF NOT EXISTS version (
    schema TEXT PRIMARY KEY,
    version INT NOT NULL
);
CREATE INDEX IF NOT EXISTS schema ON version(schema);

-- Show or hide pre-mapped fields for system item types
CREATE TABLE IF NOT EXISTS userFieldMask (
    itemTypeID INT,
    fieldID INT,
    hide INT,
    PRIMARY KEY (itemTypeID, fieldID),
    FOREIGN KEY (itemTypeID, fieldID) REFERENCES itemTypeFields(itemTypeID, fieldID)
);

-- User-defined item types -- itemTypeIDs must be >= 1000
CREATE TABLE IF NOT EXISTS userItemTypes (
    itemTypeID INT,
    typeName TEXT,
    templateItemTypeID INT,
    PRIMARY KEY (itemTypeID)
);

-- Control visibility and placement of system and user item types
CREATE TABLE IF NOT EXISTS userItemTypeMask (
    itemTypeID INT,
    display INT, -- 0 == hide, 1 == show, 2 == primary
    PRIMARY KEY (itemTypeID)
);

-- User-defined fields
CREATE TABLE IF NOT EXISTS userFields (
    userFieldID INT,
    fieldName TEXT,
    PRIMARY KEY (userFieldID)
);

-- Map custom fields to system and custom item types
CREATE TABLE IF NOT EXISTS userItemTypeFields (
    itemTypeID INT,
    userFieldID INT,
    orderIndex INT,
    PRIMARY KEY (itemTypeID, userFieldID),
    FOREIGN KEY (userFieldID) REFERENCES userFields(userFieldID)
);

-- The foundational table; every item collected has a unique record here
CREATE TABLE IF NOT EXISTS items (
    itemID INTEGER PRIMARY KEY,
    itemTypeID INT,
    title TEXT,
    dateAdded DATETIME DEFAULT CURRENT_TIMESTAMP,
    dateModified DATETIME DEFAULT CURRENT_TIMESTAMP
);

-- Type-specific data for individual items
CREATE TABLE IF NOT EXISTS itemData (
    itemID INT,
    fieldID INT,
    value,
    PRIMARY KEY (itemID, fieldID),
    FOREIGN KEY (itemID) REFERENCES items(itemID),
    FOREIGN KEY (fieldID) REFERENCES fields(fieldID)
);
CREATE INDEX IF NOT EXISTS value ON itemData(value);

-- Note data for note items
CREATE TABLE IF NOT EXISTS itemNotes (
    itemID INT,
    sourceItemID INT,
    note TEXT,
    PRIMARY KEY (itemID),
    FOREIGN KEY (itemID) REFERENCES items(itemID),
    FOREIGN KEY (sourceItemID) REFERENCES items(itemID)
);
CREATE INDEX IF NOT EXISTS itemNotes_sourceItemID ON itemNotes(sourceItemID);

-- Metadata for attachment items
CREATE TABLE IF NOT EXISTS itemAttachments (
    itemID INT,
    sourceItemID INT,
    linkMode INT,
    mimeType TEXT,
    charsetID INT,
    path TEXT,
    originalPath TEXT,
    PRIMARY KEY (itemID),
    FOREIGN KEY (itemID) REFERENCES items(itemID),
    FOREIGN KEY (sourceItemID) REFERENCES items(sourceItemID)
);
CREATE INDEX IF NOT EXISTS itemAttachments_sourceItemID ON itemAttachments(sourceItemID);
CREATE INDEX IF NOT EXISTS itemAttachments_mimeType ON itemAttachments(mimeType);

-- Individual entries for each tag
CREATE TABLE IF NOT EXISTS tags (
    tagID INT,
    tag TEXT UNIQUE,
    PRIMARY KEY (tagID)
);

-- Associates items with keywords
CREATE TABLE IF NOT EXISTS itemTags (
    itemID INT,
    tagID INT,
    PRIMARY KEY (itemID, tagID),
    FOREIGN KEY (itemID) REFERENCES items(itemID),
    FOREIGN KEY (tagID) REFERENCES tags(tagID)
);
CREATE INDEX IF NOT EXISTS itemTags_tagID ON itemTags(tagID);

CREATE TABLE IF NOT EXISTS itemSeeAlso (
    itemID INT,
    linkedItemID INT,
    PRIMARY KEY (itemID, linkedItemID),
    FOREIGN KEY (itemID) REFERENCES items(itemID),
    FOREIGN KEY (linkedItemID) REFERENCES items(itemID)
);
CREATE INDEX IF NOT EXISTS itemSeeAlso_linkedItemID ON itemSeeAlso(linkedItemID);

-- Names of each individual "creator" (inc. authors, editors, etc.)
CREATE TABLE IF NOT EXISTS creators (
    creatorID INT,
    firstName TEXT,
    lastName TEXT,
    isInstitution INT,
    PRIMARY KEY (creatorID)
);

-- Associates single or multiple creators to items
CREATE TABLE IF NOT EXISTS itemCreators (
    itemID INT,
    creatorID INT,
    creatorTypeID INT DEFAULT 1,
    orderIndex INT DEFAULT 0,
    PRIMARY KEY (itemID, creatorID, creatorTypeID, orderIndex),
    FOREIGN KEY (itemID) REFERENCES items(itemID),
    FOREIGN KEY (creatorID) REFERENCES creators(creatorID)
    FOREIGN KEY (creatorTypeID) REFERENCES creatorTypes(creatorTypeID)
);

-- Collections for holding items
CREATE TABLE IF NOT EXISTS collections (
    collectionID INT,
    collectionName TEXT,
    parentCollectionID INT,
    PRIMARY KEY (collectionID),
    FOREIGN KEY (parentCollectionID) REFERENCES collections(collectionID)
);

-- Associates items with the various collections they belong to
CREATE TABLE IF NOT EXISTS collectionItems (
    collectionID INT,
    itemID INT,
    orderIndex INT DEFAULT 0,
    PRIMARY KEY (collectionID, itemID),
    FOREIGN KEY (collectionID) REFERENCES collections(collectionID),
    FOREIGN KEY (itemID) REFERENCES items(itemID)
);
CREATE INDEX IF NOT EXISTS itemID ON collectionItems(itemID);

CREATE TABLE IF NOT EXISTS savedSearches (
    savedSearchID INT,
    savedSearchName TEXT,
    PRIMARY KEY(savedSearchID)
);

CREATE TABLE IF NOT EXISTS savedSearchConditions (
    savedSearchID INT,
    searchConditionID INT,
    condition TEXT,
    operator TEXT,
    value TEXT,
    required NONE,
    PRIMARY KEY(savedSearchID, searchConditionID),
    FOREIGN KEY (savedSearchID) REFERENCES savedSearches(savedSearchID)
);

CREATE TABLE IF NOT EXISTS fulltextWords (
    wordID INTEGER PRIMARY KEY,
    word TEXT UNIQUE
);
CREATE INDEX IF NOT EXISTS fulltextWords_word ON fulltextWords(word);

CREATE TABLE IF NOT EXISTS fulltextItems (
    wordID INT,
    itemID INT,
    PRIMARY KEY (wordID, itemID)
);
CREATE INDEX IF NOT EXISTS fulltextItems_itemID ON fulltextItems(itemID);