Benjamin Admin
e958f88a2d
Phase 1 — Stammdaten (7 tables):
tt_class, tt_period, tt_room, tt_subject, tt_teacher,
tt_curriculum, tt_assignment with CRUD endpoints.
Phase 2 — Constraints (15 typed tables):
Teacher (6): unavailable_day, unavailable_window, max_hours_day,
max_hours_week, excluded_subject, excluded_room
Subject (5): min_day_gap, max_consecutive, contiguous_when_repeated,
preferred_period, double_lesson
Class (2): max_hours_day, no_gaps
Room (2): requires_type, unavailable
Each constraint row carries is_hard / weight / active / note /
created_by_user_id; ownership enforced via WHERE EXISTS against the
parent tt_teacher/tt_class/tt_subject/tt_room row.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
105 lines
4.0 KiB
Go
105 lines
4.0 KiB
Go
package database
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// TimetableMigrations returns the SQL statements that create all timetable-related
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// tables. They are applied idempotently via CREATE TABLE IF NOT EXISTS.
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func TimetableMigrations() []string {
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return []string{
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// Classes (school-wide, distinct from per-teacher `classes` table)
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`CREATE TABLE IF NOT EXISTS tt_class (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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created_by_user_id UUID NOT NULL,
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name VARCHAR(50) NOT NULL,
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grade_level INT NOT NULL,
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student_count INT DEFAULT 0,
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notes TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(created_by_user_id, name)
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)`,
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// Time periods (Mon=1..Sun=7, period_index = 1..N)
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`CREATE TABLE IF NOT EXISTS tt_period (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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created_by_user_id UUID NOT NULL,
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day_of_week INT NOT NULL CHECK (day_of_week BETWEEN 1 AND 7),
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period_index INT NOT NULL CHECK (period_index >= 1),
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start_time TIME NOT NULL,
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end_time TIME NOT NULL,
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is_break BOOLEAN DEFAULT false,
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label VARCHAR(50),
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(created_by_user_id, day_of_week, period_index)
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)`,
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// Rooms
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`CREATE TABLE IF NOT EXISTS tt_room (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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created_by_user_id UUID NOT NULL,
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name VARCHAR(50) NOT NULL,
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room_type VARCHAR(30),
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capacity INT DEFAULT 30,
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floor_level INT DEFAULT 0,
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has_elevator BOOLEAN DEFAULT true,
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notes TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(created_by_user_id, name)
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)`,
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// Subjects (school-wide, distinct from per-teacher `subjects`)
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`CREATE TABLE IF NOT EXISTS tt_subject (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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created_by_user_id UUID NOT NULL,
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name VARCHAR(100) NOT NULL,
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short_code VARCHAR(10) NOT NULL,
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color VARCHAR(7),
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is_main_subject BOOLEAN DEFAULT false,
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required_room_type VARCHAR(30),
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(created_by_user_id, short_code)
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)`,
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// Teachers (planning resource, NOT a BreakPilot user)
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`CREATE TABLE IF NOT EXISTS tt_teacher (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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created_by_user_id UUID NOT NULL,
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first_name VARCHAR(100) NOT NULL,
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last_name VARCHAR(100) NOT NULL,
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short_code VARCHAR(10) NOT NULL,
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employment_percentage INT DEFAULT 100,
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max_hours_week INT DEFAULT 28,
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notes TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(created_by_user_id, short_code)
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)`,
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// Curriculum: weekly hour count per class+subject
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`CREATE TABLE IF NOT EXISTS tt_curriculum (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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class_id UUID NOT NULL REFERENCES tt_class(id) ON DELETE CASCADE,
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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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weekly_hours INT NOT NULL CHECK (weekly_hours >= 1),
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(class_id, subject_id)
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)`,
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// Assignment: which teacher teaches which subject in which class
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`CREATE TABLE IF NOT EXISTS tt_assignment (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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class_id UUID NOT NULL REFERENCES tt_class(id) ON DELETE CASCADE,
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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(teacher_id, class_id, subject_id)
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)`,
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// Indexes
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`CREATE INDEX IF NOT EXISTS idx_tt_class_user ON tt_class(created_by_user_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_period_user ON tt_period(created_by_user_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_room_user ON tt_room(created_by_user_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_subject_user ON tt_subject(created_by_user_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_teacher_user ON tt_teacher(created_by_user_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_curriculum_class ON tt_curriculum(class_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_assignment_teacher ON tt_assignment(teacher_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_assignment_class ON tt_assignment(class_id)`,
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}
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}
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