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package store
import "encoding/json"
// AverageEstimateForProject returns the rounded average estimated_minutes
// across all user-estimated (estimated_minutes > 0) tasks under projectID.
// ok is false when no such task exists -- there's no signal to infer from.
func (s *Store) AverageEstimateForProject(projectID string) (int, bool, error) {
var sum, count int
rows, err := s.db.Query(`SELECT estimated_minutes FROM native_tasks WHERE project_id = ? AND estimated_minutes > 0`, projectID)
if err != nil {
return 0, false, err
}
defer func() { _ = rows.Close() }()
for rows.Next() {
var minutes int
if err := rows.Scan(&minutes); err != nil {
return 0, false, err
}
sum += minutes
count++
}
if err := rows.Err(); err != nil {
return 0, false, err
}
if count == 0 {
return 0, false, nil
}
return sum / count, true, nil
}
// AverageEstimateForLabel returns the rounded average estimated_minutes
// across all user-estimated tasks carrying the given label. Labels are
// stored as a JSON array column, not a joinable table, so this scans every
// estimated task and filters in Go rather than risking a SQL substring
// false-positive (e.g. LIKE '%"run"%' matching a task labeled "running").
func (s *Store) AverageEstimateForLabel(label string) (int, bool, error) {
rows, err := s.db.Query(`SELECT labels, estimated_minutes FROM native_tasks WHERE estimated_minutes > 0`)
if err != nil {
return 0, false, err
}
defer func() { _ = rows.Close() }()
var sum, count int
for rows.Next() {
var labelsJSON string
var minutes int
if err := rows.Scan(&labelsJSON, &minutes); err != nil {
return 0, false, err
}
var labels []string
if err := json.Unmarshal([]byte(labelsJSON), &labels); err != nil {
continue
}
for _, l := range labels {
if l == label {
sum += minutes
count++
break
}
}
}
if err := rows.Err(); err != nil {
return 0, false, err
}
if count == 0 {
return 0, false, nil
}
return sum / count, true, nil
}
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