Reports migrations
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supabase/migrations/20260303090000_add_report_rpcs.sql
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supabase/migrations/20260303090000_add_report_rpcs.sql
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-- =============================================================
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-- Reports Infrastructure: pg_trgm + Server-side RPC functions
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-- =============================================================
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-- All RPCs accept a date range (p_start, p_end) and use
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-- SECURITY INVOKER so existing RLS policies apply.
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-- =============================================================
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-- Enable pg_trgm for fuzzy subject clustering
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CREATE EXTENSION IF NOT EXISTS pg_trgm;
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-- GIN trigram indexes for subject similarity searches
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CREATE INDEX IF NOT EXISTS idx_tickets_subject_trgm
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ON tickets USING gin (lower(subject) gin_trgm_ops);
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CREATE INDEX IF NOT EXISTS idx_tasks_title_trgm
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ON tasks USING gin (lower(title) gin_trgm_ops);
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-- ----- 1. Tickets by status -----
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CREATE OR REPLACE FUNCTION report_tickets_by_status(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(status text, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT t.status, count(*)
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FROM tickets t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY t.status
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ORDER BY count(*) DESC;
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$$;
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-- ----- 2. Tasks by status -----
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CREATE OR REPLACE FUNCTION report_tasks_by_status(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(status text, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT t.status::text, count(*)
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FROM tasks t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY t.status
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ORDER BY count(*) DESC;
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$$;
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-- ----- 3. Tasks created by hour of day -----
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CREATE OR REPLACE FUNCTION report_tasks_by_hour(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(hour int, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT EXTRACT(HOUR FROM t.created_at AT TIME ZONE 'Asia/Manila')::int AS hour,
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count(*)
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FROM tasks t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY hour
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ORDER BY hour;
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$$;
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-- ----- 4. Tickets created by hour of day -----
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CREATE OR REPLACE FUNCTION report_tickets_by_hour(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(hour int, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT EXTRACT(HOUR FROM t.created_at AT TIME ZONE 'Asia/Manila')::int AS hour,
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count(*)
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FROM tickets t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY hour
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ORDER BY hour;
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$$;
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-- ----- 5. Top offices by ticket count -----
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CREATE OR REPLACE FUNCTION report_top_offices_tickets(
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p_start timestamptz,
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p_end timestamptz,
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p_limit int DEFAULT 10
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)
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RETURNS TABLE(office_name text, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT o.name AS office_name, count(*)
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FROM tickets t
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JOIN offices o ON o.id = t.office_id
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY o.name
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ORDER BY count(*) DESC
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LIMIT p_limit;
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$$;
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-- ----- 6. Top offices by task count -----
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CREATE OR REPLACE FUNCTION report_top_offices_tasks(
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p_start timestamptz,
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p_end timestamptz,
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p_limit int DEFAULT 10
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)
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RETURNS TABLE(office_name text, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT o.name AS office_name, count(*)
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FROM tasks t
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JOIN offices o ON o.id = t.office_id
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY o.name
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ORDER BY count(*) DESC
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LIMIT p_limit;
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$$;
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-- ----- 7. Top ticket subjects (pg_trgm clustering) -----
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CREATE OR REPLACE FUNCTION report_top_ticket_subjects(
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p_start timestamptz,
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p_end timestamptz,
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p_limit int DEFAULT 10,
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p_threshold float DEFAULT 0.4
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)
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RETURNS TABLE(subject_group text, ticket_count bigint)
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LANGUAGE plpgsql STABLE SECURITY INVOKER
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AS $$
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DECLARE
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rec RECORD;
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cluster_leaders text[] := '{}';
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cluster_counts bigint[] := '{}';
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i int;
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matched boolean;
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best_idx int;
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best_sim float;
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cur_sim float;
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BEGIN
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-- Iterate subjects ordered by frequency (greedy clustering)
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FOR rec IN
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SELECT lower(trim(t.subject)) AS norm_subject, count(*) AS cnt
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FROM tickets t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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AND t.subject IS NOT NULL
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AND trim(t.subject) <> ''
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GROUP BY norm_subject
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ORDER BY cnt DESC
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LOOP
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matched := false;
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best_idx := 0;
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best_sim := 0;
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FOR i IN 1..coalesce(array_length(cluster_leaders, 1), 0) LOOP
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cur_sim := similarity(rec.norm_subject, cluster_leaders[i]);
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IF cur_sim >= p_threshold AND cur_sim > best_sim THEN
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best_sim := cur_sim;
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best_idx := i;
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matched := true;
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END IF;
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END LOOP;
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IF matched THEN
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cluster_counts[best_idx] := cluster_counts[best_idx] + rec.cnt;
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ELSE
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cluster_leaders := array_append(cluster_leaders, rec.norm_subject);
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cluster_counts := array_append(cluster_counts, rec.cnt);
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END IF;
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END LOOP;
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-- Return top clusters
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RETURN QUERY
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SELECT sub.cl AS subject_group, sub.cc AS ticket_count
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FROM (
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SELECT unnest(cluster_leaders) AS cl,
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unnest(cluster_counts) AS cc
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) sub
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ORDER BY sub.cc DESC
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LIMIT p_limit;
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END;
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$$;
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-- ----- 8. Top task subjects (pg_trgm clustering) -----
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CREATE OR REPLACE FUNCTION report_top_task_subjects(
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p_start timestamptz,
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p_end timestamptz,
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p_limit int DEFAULT 10,
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p_threshold float DEFAULT 0.4
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)
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RETURNS TABLE(subject_group text, task_count bigint)
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LANGUAGE plpgsql STABLE SECURITY INVOKER
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AS $$
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DECLARE
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rec RECORD;
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cluster_leaders text[] := '{}';
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cluster_counts bigint[] := '{}';
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i int;
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matched boolean;
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best_idx int;
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best_sim float;
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cur_sim float;
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BEGIN
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FOR rec IN
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SELECT lower(trim(t.title)) AS norm_title, count(*) AS cnt
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FROM tasks t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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AND t.title IS NOT NULL
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AND trim(t.title) <> ''
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GROUP BY norm_title
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ORDER BY cnt DESC
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LOOP
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matched := false;
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best_idx := 0;
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best_sim := 0;
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FOR i IN 1..coalesce(array_length(cluster_leaders, 1), 0) LOOP
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cur_sim := similarity(rec.norm_title, cluster_leaders[i]);
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IF cur_sim >= p_threshold AND cur_sim > best_sim THEN
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best_sim := cur_sim;
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best_idx := i;
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matched := true;
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END IF;
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END LOOP;
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IF matched THEN
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cluster_counts[best_idx] := cluster_counts[best_idx] + rec.cnt;
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ELSE
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cluster_leaders := array_append(cluster_leaders, rec.norm_title);
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cluster_counts := array_append(cluster_counts, rec.cnt);
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END IF;
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END LOOP;
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RETURN QUERY
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SELECT sub.cl AS subject_group, sub.cc AS task_count
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FROM (
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SELECT unnest(cluster_leaders) AS cl,
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unnest(cluster_counts) AS cc
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) sub
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ORDER BY sub.cc DESC
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LIMIT p_limit;
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END;
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$$;
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-- ----- 9. Monthly overview (tickets + tasks) -----
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CREATE OR REPLACE FUNCTION report_monthly_overview(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(month text, ticket_count bigint, task_count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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WITH months AS (
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SELECT to_char(date_trunc('month', d), 'YYYY-MM') AS m
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FROM generate_series(
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date_trunc('month', p_start),
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date_trunc('month', p_end - interval '1 day'),
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interval '1 month'
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) d
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),
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tk AS (
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SELECT to_char(date_trunc('month', created_at), 'YYYY-MM') AS m,
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count(*) AS cnt
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FROM tickets
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WHERE created_at >= p_start AND created_at < p_end
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GROUP BY m
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),
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ta AS (
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SELECT to_char(date_trunc('month', created_at), 'YYYY-MM') AS m,
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count(*) AS cnt
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FROM tasks
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WHERE created_at >= p_start AND created_at < p_end
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GROUP BY m
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)
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SELECT months.m AS month,
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coalesce(tk.cnt, 0) AS ticket_count,
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coalesce(ta.cnt, 0) AS task_count
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FROM months
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LEFT JOIN tk ON tk.m = months.m
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LEFT JOIN ta ON ta.m = months.m
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ORDER BY months.m;
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$$;
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-- ----- 10. Request type distribution -----
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CREATE OR REPLACE FUNCTION report_request_type_distribution(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(request_type text, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT coalesce(t.request_type::text, 'Unspecified') AS request_type,
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count(*)
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FROM tasks t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY request_type
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ORDER BY count(*) DESC;
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$$;
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-- ----- 11. Request category distribution -----
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CREATE OR REPLACE FUNCTION report_request_category_distribution(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(request_category text, count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT coalesce(t.request_category::text, 'Unspecified') AS request_category,
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count(*)
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FROM tasks t
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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GROUP BY request_category
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ORDER BY count(*) DESC;
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$$;
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-- ----- 12. Avg resolution time by office -----
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CREATE OR REPLACE FUNCTION report_avg_resolution_by_office(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(office_name text, avg_hours float)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT o.name AS office_name,
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avg(EXTRACT(EPOCH FROM (t.completed_at - t.created_at)) / 3600.0)::float AS avg_hours
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FROM tasks t
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JOIN offices o ON o.id = t.office_id
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WHERE t.created_at >= p_start
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AND t.created_at < p_end
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AND t.completed_at IS NOT NULL
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AND t.status::text = 'completed'
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GROUP BY o.name
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ORDER BY avg_hours DESC;
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$$;
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-- ----- 13. Staff workload (assigned vs completed) -----
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CREATE OR REPLACE FUNCTION report_staff_workload(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(staff_name text, assigned_count bigint, completed_count bigint)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT p.full_name AS staff_name,
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count(DISTINCT ta.task_id) AS assigned_count,
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count(DISTINCT CASE WHEN t.status::text = 'completed'
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AND t.completed_at >= p_start
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AND t.completed_at < p_end
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THEN t.id END) AS completed_count
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FROM task_assignments ta
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JOIN profiles p ON p.id = ta.user_id
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JOIN tasks t ON t.id = ta.task_id
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WHERE ta.created_at >= p_start
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AND ta.created_at < p_end
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GROUP BY p.full_name
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ORDER BY assigned_count DESC;
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$$;
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-- ----- 14. Ticket-to-task conversion rate -----
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CREATE OR REPLACE FUNCTION report_ticket_to_task_rate(
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p_start timestamptz,
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p_end timestamptz
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)
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RETURNS TABLE(total_tickets bigint, promoted_tickets bigint, conversion_rate float)
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LANGUAGE sql STABLE SECURITY INVOKER
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AS $$
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SELECT
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count(*)::bigint AS total_tickets,
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count(*) FILTER (WHERE promoted_at IS NOT NULL)::bigint AS promoted_tickets,
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CASE WHEN count(*) > 0
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THEN (count(*) FILTER (WHERE promoted_at IS NOT NULL)::float / count(*)::float * 100)
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ELSE 0
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END AS conversion_rate
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FROM tickets
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WHERE created_at >= p_start
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AND created_at < p_end;
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$$;
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