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>
225 lines
9.1 KiB
Go
225 lines
9.1 KiB
Go
package database
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// TimetableConstraintMigrations returns the DDL for all 15 constraint tables.
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// Each table follows the same shape:
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// - id / created_by_user_id / is_hard / weight / active / note / created_at
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// - one or more FKs to tt_teacher / tt_class / tt_subject / tt_room
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//
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// FK ON DELETE CASCADE removes constraints when their parent (teacher/room/etc.)
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// is deleted — the rules become meaningless without the referenced resource.
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func TimetableConstraintMigrations() []string {
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return []string{
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// ---------- Teacher constraints (6) ----------
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`CREATE TABLE IF NOT EXISTS tt_constraint_teacher_unavailable_day (
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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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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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day_of_week INT NOT NULL CHECK (day_of_week BETWEEN 1 AND 7),
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(teacher_id, day_of_week)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_teacher_unavailable_window (
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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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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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day_of_week INT NOT NULL CHECK (day_of_week BETWEEN 1 AND 7),
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start_time TIME NOT NULL,
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end_time TIME NOT NULL,
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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CHECK (end_time > start_time)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_teacher_max_hours_day (
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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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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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max_hours INT NOT NULL CHECK (max_hours BETWEEN 1 AND 12),
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is_hard BOOLEAN NOT NULL DEFAULT false,
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weight INT NOT NULL DEFAULT 50 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(teacher_id)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_teacher_max_hours_week (
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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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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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max_hours INT NOT NULL CHECK (max_hours BETWEEN 1 AND 40),
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(teacher_id)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_teacher_excluded_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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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(teacher_id, subject_id)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_teacher_excluded_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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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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room_id UUID NOT NULL REFERENCES tt_room(id) ON DELETE CASCADE,
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(teacher_id, room_id)
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)`,
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// ---------- Subject constraints (5) ----------
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`CREATE TABLE IF NOT EXISTS tt_constraint_subject_min_day_gap (
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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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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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min_gap_days INT NOT NULL CHECK (min_gap_days BETWEEN 1 AND 4),
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is_hard BOOLEAN NOT NULL DEFAULT false,
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weight INT NOT NULL DEFAULT 70 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(subject_id)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_subject_max_consecutive (
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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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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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max_consecutive INT NOT NULL CHECK (max_consecutive BETWEEN 1 AND 5),
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(subject_id)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_subject_contiguous_when_repeated (
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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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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(subject_id)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_subject_preferred_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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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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period_from INT NOT NULL CHECK (period_from BETWEEN 1 AND 12),
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period_to INT NOT NULL CHECK (period_to BETWEEN 1 AND 12),
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is_hard BOOLEAN NOT NULL DEFAULT false,
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weight INT NOT NULL DEFAULT 40 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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CHECK (period_to >= period_from)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_subject_double_lesson (
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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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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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is_hard BOOLEAN NOT NULL DEFAULT false,
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weight INT NOT NULL DEFAULT 60 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(subject_id)
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)`,
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// ---------- Class constraints (2) ----------
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`CREATE TABLE IF NOT EXISTS tt_constraint_class_max_hours_day (
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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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class_id UUID NOT NULL REFERENCES tt_class(id) ON DELETE CASCADE,
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max_hours INT NOT NULL CHECK (max_hours BETWEEN 1 AND 12),
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(class_id)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_class_no_gaps (
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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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class_id UUID NOT NULL REFERENCES tt_class(id) ON DELETE CASCADE,
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is_hard BOOLEAN NOT NULL DEFAULT false,
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weight INT NOT NULL DEFAULT 80 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(class_id)
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)`,
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// ---------- Room constraints (2) ----------
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`CREATE TABLE IF NOT EXISTS tt_constraint_room_requires_type (
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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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subject_id UUID NOT NULL REFERENCES tt_subject(id) ON DELETE CASCADE,
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room_type VARCHAR(30) NOT NULL,
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(subject_id, room_type)
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)`,
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`CREATE TABLE IF NOT EXISTS tt_constraint_room_unavailable (
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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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room_id UUID NOT NULL REFERENCES tt_room(id) ON DELETE CASCADE,
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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 BETWEEN 1 AND 12),
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is_hard BOOLEAN NOT NULL DEFAULT true,
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weight INT NOT NULL DEFAULT 100 CHECK (weight BETWEEN 0 AND 100),
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active BOOLEAN NOT NULL DEFAULT true,
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note TEXT,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(room_id, day_of_week, period_index)
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)`,
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// ---------- Indexes ----------
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`CREATE INDEX IF NOT EXISTS idx_tt_c_teacher_unav_day_teacher ON tt_constraint_teacher_unavailable_day(teacher_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_c_teacher_unav_win_teacher ON tt_constraint_teacher_unavailable_window(teacher_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_c_teacher_excl_subj_teacher ON tt_constraint_teacher_excluded_subject(teacher_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_c_teacher_excl_room_teacher ON tt_constraint_teacher_excluded_room(teacher_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_c_room_unav_room ON tt_constraint_room_unavailable(room_id)`,
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}
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}
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