131ffc2f38
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25 lines
1.2 KiB
SQL
25 lines
1.2 KiB
SQL
-- Bidirectionele live klasinteractie. Sessies onthouden het laatste echte
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-- voortgangsmoment en een eventuele pauze. Leerkrachtacties worden duurzaam
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-- opgeslagen, zodat een korte netwerkonderbreking geen hint of aanmoediging
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-- laat verdwijnen.
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ALTER TABLE live_learning_sessions
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ADD COLUMN IF NOT EXISTS last_progress_at TIMESTAMPTZ,
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ADD COLUMN IF NOT EXISTS paused_at TIMESTAMPTZ;
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CREATE TABLE IF NOT EXISTS teacher_pupil_actions (
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id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
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class_id BIGINT NOT NULL REFERENCES classes(id) ON DELETE CASCADE,
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pupil_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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teacher_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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kind TEXT NOT NULL CHECK (kind IN ('hint', 'encourage', 'pause', 'resume', 'easier')),
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message TEXT,
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payload JSONB NOT NULL DEFAULT '{}'::jsonb,
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created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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acknowledged_at TIMESTAMPTZ,
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CHECK (message IS NULL OR char_length(message) <= 160)
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);
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CREATE INDEX IF NOT EXISTS idx_teacher_pupil_actions_pending
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ON teacher_pupil_actions (pupil_id, acknowledged_at, created_at DESC);
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CREATE INDEX IF NOT EXISTS idx_teacher_pupil_actions_class
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ON teacher_pupil_actions (class_id, created_at DESC);
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