Harwinder Sekhon
c6a970880c
Scanner indexes quiz files found next to videos ([&] questions, "- " options, "-- Correct" markers; _notsolved twins ignored). Quizzes appear in the folder content list interleaved with videos by filename order. New api/quiz.php serves questions without answers and grades attempts server-side; per-user best/last score and attempts stored in quiz_progress. Folder/course progress now aggregates videos + quizzes with partial credit for partial scores.
93 lines
4.3 KiB
SQL
93 lines
4.3 KiB
SQL
-- CourseHub schema (MySQL / MariaDB)
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CREATE DATABASE IF NOT EXISTS coursehub CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
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USE coursehub;
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CREATE TABLE IF NOT EXISTS users (
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id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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username VARCHAR(50) NOT NULL UNIQUE,
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password_hash VARCHAR(255) NOT NULL,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
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) ENGINE=InnoDB;
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-- One row per directory found under VIDEOS_ROOT.
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-- `path` is the relative path from VIDEOS_ROOT, e.g. "Course 1/Intro".
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CREATE TABLE IF NOT EXISTS folders (
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id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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parent_id INT UNSIGNED NULL,
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name VARCHAR(255) NOT NULL,
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path VARCHAR(700) NOT NULL UNIQUE,
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depth INT UNSIGNED NOT NULL DEFAULT 0,
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sort_order INT UNSIGNED NOT NULL DEFAULT 0,
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is_missing TINYINT(1) NOT NULL DEFAULT 0,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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CONSTRAINT fk_folders_parent FOREIGN KEY (parent_id)
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REFERENCES folders(id) ON DELETE CASCADE,
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INDEX idx_folders_parent (parent_id)
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) ENGINE=InnoDB;
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CREATE TABLE IF NOT EXISTS videos (
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id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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folder_id INT UNSIGNED NOT NULL,
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name VARCHAR(255) NOT NULL, -- display name, filename without .mp4
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filename VARCHAR(255) NOT NULL,
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path VARCHAR(700) NOT NULL UNIQUE, -- relative path incl. filename
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size_bytes BIGINT UNSIGNED NOT NULL DEFAULT 0,
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duration_seconds FLOAT NULL, -- filled in by the player on first load
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sort_order INT UNSIGNED NOT NULL DEFAULT 0,
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is_missing TINYINT(1) NOT NULL DEFAULT 0,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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CONSTRAINT fk_videos_folder FOREIGN KEY (folder_id)
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REFERENCES folders(id) ON DELETE CASCADE,
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INDEX idx_videos_folder (folder_id)
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) ENGINE=InnoDB;
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-- One row per "*_quiz_solved.txt" file found next to the videos.
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-- Questions/options are parsed from the file on demand; only the count is
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-- cached here for progress math.
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CREATE TABLE IF NOT EXISTS quizzes (
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id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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folder_id INT UNSIGNED NOT NULL,
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name VARCHAR(255) NOT NULL, -- filename without the _quiz_solved.txt suffix
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filename VARCHAR(255) NOT NULL,
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path VARCHAR(700) NOT NULL UNIQUE,
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num_questions INT UNSIGNED NOT NULL DEFAULT 0,
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sort_order INT UNSIGNED NOT NULL DEFAULT 0,
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is_missing TINYINT(1) NOT NULL DEFAULT 0,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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CONSTRAINT fk_quizzes_folder FOREIGN KEY (folder_id)
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REFERENCES folders(id) ON DELETE CASCADE,
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INDEX idx_quizzes_folder (folder_id)
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) ENGINE=InnoDB;
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-- Per-user quiz results. completed = every question answered correctly
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-- in a single attempt (sticky).
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CREATE TABLE IF NOT EXISTS quiz_progress (
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user_id INT UNSIGNED NOT NULL,
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quiz_id INT UNSIGNED NOT NULL,
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best_score INT UNSIGNED NOT NULL DEFAULT 0,
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last_score INT UNSIGNED NOT NULL DEFAULT 0,
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total_questions INT UNSIGNED NOT NULL DEFAULT 0,
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attempts INT UNSIGNED NOT NULL DEFAULT 0,
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completed TINYINT(1) NOT NULL DEFAULT 0,
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updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
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ON UPDATE CURRENT_TIMESTAMP,
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PRIMARY KEY (user_id, quiz_id),
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CONSTRAINT fk_qp_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
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CONSTRAINT fk_qp_quiz FOREIGN KEY (quiz_id) REFERENCES quizzes(id) ON DELETE CASCADE
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) ENGINE=InnoDB;
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-- Per-user playback state: resume position + completion flag.
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CREATE TABLE IF NOT EXISTS video_progress (
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user_id INT UNSIGNED NOT NULL,
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video_id INT UNSIGNED NOT NULL,
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position_seconds FLOAT NOT NULL DEFAULT 0,
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duration_seconds FLOAT NULL,
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completed TINYINT(1) NOT NULL DEFAULT 0,
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updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
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ON UPDATE CURRENT_TIMESTAMP,
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PRIMARY KEY (user_id, video_id),
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CONSTRAINT fk_vp_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
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CONSTRAINT fk_vp_video FOREIGN KEY (video_id) REFERENCES videos(id) ON DELETE CASCADE,
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INDEX idx_vp_user_updated (user_id, updated_at)
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) ENGINE=InnoDB;
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