-- CreateTable
CREATE TABLE "Song" (
    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
    "title" TEXT NOT NULL,
    "artist" TEXT NOT NULL,
    "filename" TEXT NOT NULL,
    "coverImage" TEXT,
    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- CreateTable
CREATE TABLE "Genre" (
    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
    "name" TEXT NOT NULL
);

-- CreateTable
CREATE TABLE "DailyPuzzle" (
    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
    "date" TEXT NOT NULL,
    "songId" INTEGER NOT NULL,
    "genreId" INTEGER,
    CONSTRAINT "DailyPuzzle_songId_fkey" FOREIGN KEY ("songId") REFERENCES "Song" ("id") ON DELETE RESTRICT ON UPDATE CASCADE,
    CONSTRAINT "DailyPuzzle_genreId_fkey" FOREIGN KEY ("genreId") REFERENCES "Genre" ("id") ON DELETE SET NULL ON UPDATE CASCADE
);

-- CreateTable
CREATE TABLE "_GenreToSong" (
    "A" INTEGER NOT NULL,
    "B" INTEGER NOT NULL,
    CONSTRAINT "_GenreToSong_A_fkey" FOREIGN KEY ("A") REFERENCES "Genre" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
    CONSTRAINT "_GenreToSong_B_fkey" FOREIGN KEY ("B") REFERENCES "Song" ("id") ON DELETE CASCADE ON UPDATE CASCADE
);

-- CreateIndex
CREATE UNIQUE INDEX "Genre_name_key" ON "Genre"("name");

-- CreateIndex
CREATE UNIQUE INDEX "DailyPuzzle_date_genreId_key" ON "DailyPuzzle"("date", "genreId");

-- CreateIndex
CREATE UNIQUE INDEX "_GenreToSong_AB_unique" ON "_GenreToSong"("A", "B");

-- CreateIndex
CREATE INDEX "_GenreToSong_B_index" ON "_GenreToSong"("B");