90851f960a
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25 lines
1.2 KiB
SQL
25 lines
1.2 KiB
SQL
-- Realtime leerlingactiviteit: een sessie start pas bij echte interactie met
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-- een toegewezen widget. Heartbeats houden de sessie live; afgesloten en
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-- weggevallen sessies blijven kort terug te zien in het klasdashboard.
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CREATE TABLE IF NOT EXISTS live_learning_sessions (
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id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
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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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class_id BIGINT NOT NULL REFERENCES classes(id) ON DELETE CASCADE,
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assignment_id BIGINT REFERENCES assignments(id) ON DELETE SET NULL,
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board_id TEXT NOT NULL,
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widget_id TEXT NOT NULL,
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widget_type TEXT NOT NULL,
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mode TEXT NOT NULL DEFAULT 'werken' CHECK (mode IN ('werken', 'kijken')),
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started_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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last_seen_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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ended_at TIMESTAMPTZ,
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progress_count INTEGER NOT NULL DEFAULT 0,
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attempts INTEGER NOT NULL DEFAULT 0,
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correct INTEGER NOT NULL DEFAULT 0
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);
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CREATE INDEX IF NOT EXISTS idx_live_learning_sessions_class_recent
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ON live_learning_sessions (class_id, started_at DESC);
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CREATE INDEX IF NOT EXISTS idx_live_learning_sessions_pupil_open
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ON live_learning_sessions (pupil_id, ended_at, last_seen_at DESC);
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