Benjamin Admin
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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
51 lines
2.1 KiB
Go
51 lines
2.1 KiB
Go
package database
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// TimetableSolutionMigrations creates tt_solution + tt_lesson for the solver
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// pipeline. One run of the solver produces exactly one tt_solution row plus
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// many tt_lesson rows (one per scheduled class-subject hour).
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//
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// Status flow:
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//
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// pending → running → completed | failed | infeasible
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//
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// hard_score / soft_score come straight from Timefold's HardSoftScore. Lower
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// (more negative) hard_score means more hard-constraint violations; the UI
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// only ever offers solutions with hard_score == 0 as "valid".
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func TimetableSolutionMigrations() []string {
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return []string{
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`CREATE TABLE IF NOT EXISTS tt_solution (
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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(120),
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status VARCHAR(20) NOT NULL DEFAULT 'pending',
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hard_score INT,
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soft_score INT,
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error_message TEXT,
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started_at TIMESTAMPTZ,
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finished_at TIMESTAMPTZ,
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created_at TIMESTAMPTZ DEFAULT NOW()
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)`,
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`CREATE TABLE IF NOT EXISTS tt_lesson (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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solution_id UUID NOT NULL REFERENCES tt_solution(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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teacher_id UUID NOT NULL REFERENCES tt_teacher(id) ON DELETE CASCADE,
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room_id UUID REFERENCES tt_room(id) ON DELETE SET 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 BETWEEN 1 AND 12),
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pinned BOOLEAN NOT NULL DEFAULT false,
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created_at TIMESTAMPTZ DEFAULT NOW(),
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UNIQUE(solution_id, class_id, day_of_week, period_index),
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UNIQUE(solution_id, teacher_id, day_of_week, period_index),
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UNIQUE(solution_id, room_id, day_of_week, period_index)
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)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_solution_user ON tt_solution(created_by_user_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_lesson_solution ON tt_lesson(solution_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_lesson_class ON tt_lesson(class_id)`,
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`CREATE INDEX IF NOT EXISTS idx_tt_lesson_teacher ON tt_lesson(teacher_id)`,
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}
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}
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