-- Aggregated LMS learning activity for admin: completed lessons and completed practices
-- (rollup tables + lesson/practice completion are the persisted signals in this schema).

-- name: ListUserLMSFlatLearningActivityByUser :many
SELECT
    x.activity_kind,
    x.program_id,
    x.program_name,
    x.program_sort_order,
    x.program_completed_at,
    x.course_id,
    x.course_name,
    x.course_sort_order,
    x.course_completed_at,
    COALESCE(x.module_id, 0)::BIGINT AS module_id,
    COALESCE(x.module_name, '')::TEXT AS module_name,
    COALESCE(x.module_sort_order, 0)::INT AS module_sort_order,
    x.module_completed_at,
    COALESCE(x.lesson_id, 0)::BIGINT AS lesson_id,
    COALESCE(x.lesson_title, '')::TEXT AS lesson_title,
    COALESCE(x.lesson_sort_order, 0)::INT AS lesson_sort_order,
    x.lesson_completed_at,
    COALESCE(x.lms_practice_id, 0)::BIGINT AS lms_practice_id,
    COALESCE(x.practice_title, '')::TEXT AS practice_title,
    x.activity_at
FROM (
    SELECT
        'lesson'::TEXT AS activity_kind,
        p.id AS program_id,
        p.name AS program_name,
        p.sort_order AS program_sort_order,
        prf.completed_at AS program_completed_at,
        c.id AS course_id,
        c.name AS course_name,
        c.sort_order AS course_sort_order,
        crf.completed_at AS course_completed_at,
        m.id AS module_id,
        m.name AS module_name,
        m.sort_order AS module_sort_order,
        mrf.completed_at AS module_completed_at,
        l.id AS lesson_id,
        l.title AS lesson_title,
        l.sort_order AS lesson_sort_order,
        ulp.completed_at AS lesson_completed_at,
        NULL::BIGINT AS lms_practice_id,
        NULL::VARCHAR AS practice_title,
        ulp.completed_at AS activity_at
    FROM
        lms_user_lesson_progress ulp
        INNER JOIN lessons l ON l.id = ulp.lesson_id
        INNER JOIN modules m ON m.id = l.module_id
        INNER JOIN courses c ON c.id = m.course_id
            AND c.program_id = m.program_id
        INNER JOIN programs p ON p.id = c.program_id
        LEFT JOIN lms_user_program_progress prf ON prf.user_id = ulp.user_id
            AND prf.program_id = p.id
        LEFT JOIN lms_user_course_progress crf ON crf.user_id = ulp.user_id
            AND crf.course_id = c.id
        LEFT JOIN lms_user_module_progress mrf ON mrf.user_id = ulp.user_id
            AND mrf.module_id = m.id
WHERE
    ulp.user_id = $1
UNION ALL
    SELECT
        'practice'::TEXT,
        p.id,
        p.name,
        p.sort_order,
        prf.completed_at,
        c.id,
        c.name,
        c.sort_order,
        crf.completed_at,
        m.id,
        m.name,
        m.sort_order,
        mrf.completed_at,
        l.id,
        l.title,
        l.sort_order,
        lucomp.completed_at,
        lp.id,
        lp.title,
        upp.completed_at
    FROM
        user_practice_progress upp
        INNER JOIN lms_practices lp ON lp.question_set_id = upp.question_set_id
            AND lp.lesson_id IS NOT NULL
        INNER JOIN question_sets qs ON qs.id = upp.question_set_id
            AND qs.set_type = 'PRACTICE'
            AND qs.status = 'PUBLISHED'
        INNER JOIN lessons l ON l.id = lp.lesson_id
        INNER JOIN modules m ON m.id = l.module_id
        INNER JOIN courses c ON c.id = m.course_id
            AND c.program_id = m.program_id
        INNER JOIN programs p ON p.id = c.program_id
        LEFT JOIN lms_user_program_progress prf ON prf.user_id = upp.user_id
            AND prf.program_id = p.id
        LEFT JOIN lms_user_course_progress crf ON crf.user_id = upp.user_id
            AND crf.course_id = c.id
        LEFT JOIN lms_user_module_progress mrf ON mrf.user_id = upp.user_id
            AND mrf.module_id = m.id
        LEFT JOIN lms_user_lesson_progress lucomp ON lucomp.user_id = upp.user_id
            AND lucomp.lesson_id = l.id
    WHERE
        upp.user_id = $1
        AND upp.completed_at IS NOT NULL
UNION ALL
    SELECT
        'practice'::TEXT,
        p.id,
        p.name,
        p.sort_order,
        prf.completed_at,
        c.id,
        c.name,
        c.sort_order,
        crf.completed_at,
        m.id,
        m.name,
        m.sort_order,
        mrf.completed_at,
        NULL::BIGINT,
        NULL::VARCHAR,
        NULL::INT,
        NULL::TIMESTAMPTZ,
        lp.id,
        lp.title,
        upp.completed_at
    FROM
        user_practice_progress upp
        INNER JOIN lms_practices lp ON lp.question_set_id = upp.question_set_id
            AND lp.module_id IS NOT NULL
            AND lp.lesson_id IS NULL
        INNER JOIN question_sets qs ON qs.id = upp.question_set_id
            AND qs.set_type = 'PRACTICE'
            AND qs.status = 'PUBLISHED'
        INNER JOIN modules m ON m.id = lp.module_id
        INNER JOIN courses c ON c.id = m.course_id
            AND c.program_id = m.program_id
        INNER JOIN programs p ON p.id = c.program_id
        LEFT JOIN lms_user_program_progress prf ON prf.user_id = upp.user_id
            AND prf.program_id = p.id
        LEFT JOIN lms_user_course_progress crf ON crf.user_id = upp.user_id
            AND crf.course_id = c.id
        LEFT JOIN lms_user_module_progress mrf ON mrf.user_id = upp.user_id
            AND mrf.module_id = m.id
    WHERE
        upp.user_id = $1
        AND upp.completed_at IS NOT NULL
UNION ALL
    SELECT
        'practice'::TEXT,
        p.id,
        p.name,
        p.sort_order,
        prf.completed_at,
        c.id,
        c.name,
        c.sort_order,
        crf.completed_at,
        NULL::BIGINT,
        NULL::VARCHAR,
        NULL::INT,
        NULL::TIMESTAMPTZ,
        NULL::BIGINT,
        NULL::VARCHAR,
        NULL::INT,
        NULL::TIMESTAMPTZ,
        lp.id,
        lp.title,
        upp.completed_at
    FROM
        user_practice_progress upp
        INNER JOIN lms_practices lp ON lp.question_set_id = upp.question_set_id
            AND lp.course_id IS NOT NULL
            AND lp.module_id IS NULL
            AND lp.lesson_id IS NULL
        INNER JOIN question_sets qs ON qs.id = upp.question_set_id
            AND qs.set_type = 'PRACTICE'
            AND qs.status = 'PUBLISHED'
        INNER JOIN courses c ON c.id = lp.course_id
        INNER JOIN programs p ON p.id = c.program_id
        LEFT JOIN lms_user_program_progress prf ON prf.user_id = upp.user_id
            AND prf.program_id = p.id
        LEFT JOIN lms_user_course_progress crf ON crf.user_id = upp.user_id
            AND crf.course_id = c.id
    WHERE
        upp.user_id = $1
        AND upp.completed_at IS NOT NULL
) AS x
ORDER BY
    x.program_sort_order,
    x.program_id,
    x.course_sort_order,
    x.course_id,
    x.module_sort_order NULLS LAST,
    x.module_id NULLS LAST,
    x.lesson_sort_order NULLS LAST,
    x.lesson_id NULLS LAST,
    x.activity_kind,
    x.activity_at;