CREATE TABLE "entry" (
    "id"            UUID NOT NULL DEFAULT uuid_generate_v4(),
    "createdAt"     TIMESTAMPTZ DEFAULT now(),
    "updatedAt"     TIMESTAMPTZ DEFAULT now(),
    "userId"        UUID NOT NULL REFERENCES "user"("id") ON DELETE CASCADE,
    "type"          TEXT NOT NULL,
    "_type"         TEXT[] GENERATED ALWAYS AS (CASE
        WHEN "type" = 'character' THEN ARRAY['character', 'hanzi', 'kanji']
        ELSE ARRAY["type"]
    END) STORED,
    "entry"         TEXT[] NOT NULL CHECK ("entry"[1] IS NOT NULL),
    "reading"       JSONB NOT NULL DEFAULT '{}',    -- TODO: jsonschema
    "translation"   JSONB NOT NULL DEFAULT '{}',    -- TODO: jsonschema
    "description"   TEXT NOT NULL DEFAULT '',
    "tag"           TEXT[] NOT NULL DEFAULT '{}',
    "level"         FLOAT,
    "level.kanji"   INT,
    "key"           TEXT UNIQUE,
    "_meta"         JSONB,                          -- TODO: jsonschema
    "priority"      INT GENERATED ALWAYS AS (CASE
        WHEN "type" = 'vocabulary' THEN 10
        WHEN "type" = 'character' THEN 5
        WHEN "type" = 'sentence' THEN 1
        ELSE 0
    END) STORED,
    PRIMARY KEY ("id")
);

CREATE TRIGGER "t_entry_updatedAt"
    BEFORE UPDATE ON "entry"
    FOR EACH ROW
    EXECUTE PROCEDURE "f_updatedAt"();

CREATE INDEX "idx_entry_priority" ON "entry" ("priority");

CREATE INDEX "idx_entry_updatedAt" ON "entry" ("updatedAt");
CREATE INDEX "idx_entry_userId" ON "entry" ("userId");
CREATE INDEX "idx_entry_type" ON "entry" USING GIN("_type");
CREATE INDEX "idx_entry_level" ON "entry" ("level");
CREATE INDEX "idx_entry_level.kanji" ON "entry" ("level.kanji");

CREATE INDEX "idx_entry_description" ON "entry"
    USING pgroonga("description")
    WITH (plugins='token_filters/stem', token_filters='TokenFilterStem');

CREATE INDEX "idx_entry_entry" ON "entry"
    USING pgroonga("entry")
    WITH (
        tokenizer='TokenMecab',
        normalizer='NormalizerNFKC100("unify_kana", true)'
    );
CREATE INDEX "idx_entry_entry_gin" ON "entry" USING GIN("entry");
CREATE INDEX "idx_entry_tag" ON "entry" USING pgroonga ("tag");

CREATE INDEX "idx_entry_meta" ON "entry" USING pgroonga("_meta");
CREATE INDEX "idx_entry_reading" ON "entry"
    USING pgroonga("reading")
    WITH (
        tokenizer='TokenMecab',
        normalizer='NormalizerNFKC100("unify_kana", true)'
    );
CREATE INDEX "idx_entry_translation" ON "entry"
    USING pgroonga("translation");