-- CreateTable
CREATE TABLE `poll` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `question` VARCHAR(255) NOT NULL,
    `description` TEXT NULL,
    `createdBy` INTEGER NOT NULL,
    `endsAt` DATETIME(3) NULL,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updatedAt` DATETIME(3) NOT NULL,

    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `option` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `text` VARCHAR(191) NOT NULL,
    `pollId` INTEGER NOT NULL,

    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `vote` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `pollId` INTEGER NOT NULL,
    `optionId` INTEGER NOT NULL,
    `userId` INTEGER NOT NULL,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    UNIQUE INDEX `vote_pollId_userId_key`(`pollId`, `userId`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- AddForeignKey
ALTER TABLE `poll` ADD CONSTRAINT `poll_createdBy_fkey` FOREIGN KEY (`createdBy`) REFERENCES `user`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `option` ADD CONSTRAINT `option_pollId_fkey` FOREIGN KEY (`pollId`) REFERENCES `poll`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `vote` ADD CONSTRAINT `vote_pollId_fkey` FOREIGN KEY (`pollId`) REFERENCES `poll`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `vote` ADD CONSTRAINT `vote_optionId_fkey` FOREIGN KEY (`optionId`) REFERENCES `option`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `vote` ADD CONSTRAINT `vote_userId_fkey` FOREIGN KEY (`userId`) REFERENCES `user`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;