-- CreateTable
CREATE TABLE `organizations` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `name` VARCHAR(191) NOT NULL,
    `type` ENUM('school', 'academy') NOT NULL DEFAULT 'academy',
    `inviteCode` VARCHAR(12) NOT NULL,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updatedAt` DATETIME(3) NOT NULL,

    UNIQUE INDEX `organizations_inviteCode_key`(`inviteCode`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `organization_members` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `userId` INTEGER NOT NULL,
    `organizationId` INTEGER NOT NULL,
    `role` ENUM('admin', 'teacher', 'student') NOT NULL DEFAULT 'student',
    `joinedAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `organization_members_organizationId_idx`(`organizationId`),
    UNIQUE INDEX `organization_members_userId_organizationId_key`(`userId`, `organizationId`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `classes` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `name` VARCHAR(191) NOT NULL,
    `organizationId` INTEGER NOT NULL,
    `teacherId` INTEGER NOT NULL,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `classes_organizationId_idx`(`organizationId`),
    INDEX `classes_teacherId_idx`(`teacherId`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `class_members` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `userId` INTEGER NOT NULL,
    `classId` INTEGER NOT NULL,
    `joinedAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `class_members_classId_idx`(`classId`),
    UNIQUE INDEX `class_members_userId_classId_key`(`userId`, `classId`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `assignments` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `title` VARCHAR(191) NOT NULL,
    `description` TEXT NULL,
    `classId` INTEGER NOT NULL,
    `problemSetId` INTEGER NOT NULL,
    `status` ENUM('active', 'closed', 'draft') NOT NULL DEFAULT 'active',
    `dueDate` DATETIME(3) NULL,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `assignments_classId_idx`(`classId`),
    INDEX `assignments_problemSetId_idx`(`problemSetId`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `assignment_submissions` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `userId` INTEGER NOT NULL,
    `assignmentId` INTEGER NOT NULL,
    `score` DOUBLE NULL,
    `totalProblems` INTEGER NULL,
    `correctCount` INTEGER NULL,
    `completedAt` DATETIME(3) NULL,
    `studyLogIds` JSON NULL,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `assignment_submissions_assignmentId_idx`(`assignmentId`),
    UNIQUE INDEX `assignment_submissions_userId_assignmentId_key`(`userId`, `assignmentId`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- AddForeignKey
ALTER TABLE `organization_members` ADD CONSTRAINT `organization_members_userId_fkey` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `organization_members` ADD CONSTRAINT `organization_members_organizationId_fkey` FOREIGN KEY (`organizationId`) REFERENCES `organizations`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `classes` ADD CONSTRAINT `classes_organizationId_fkey` FOREIGN KEY (`organizationId`) REFERENCES `organizations`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `classes` ADD CONSTRAINT `classes_teacherId_fkey` FOREIGN KEY (`teacherId`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `class_members` ADD CONSTRAINT `class_members_userId_fkey` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `class_members` ADD CONSTRAINT `class_members_classId_fkey` FOREIGN KEY (`classId`) REFERENCES `classes`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `assignments` ADD CONSTRAINT `assignments_classId_fkey` FOREIGN KEY (`classId`) REFERENCES `classes`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `assignments` ADD CONSTRAINT `assignments_problemSetId_fkey` FOREIGN KEY (`problemSetId`) REFERENCES `problem_sets`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `assignment_submissions` ADD CONSTRAINT `assignment_submissions_userId_fkey` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `assignment_submissions` ADD CONSTRAINT `assignment_submissions_assignmentId_fkey` FOREIGN KEY (`assignmentId`) REFERENCES `assignments`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;