| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "encoding/csv" |
| 5 | "net/http" |
| 6 | "strings" |
| 7 | "time" |
| 8 | |
| 9 | "github.com/stevedylandev/andromeda/pkg/web" |
| 10 | ) |
| 11 | |
| 12 | // exportHandler streams records as CSV. With ?habit=<short_id> it exports a |
| 13 | // single habit; otherwise every habit's records. Rows are chronological. |
| 14 | func (a *App) exportHandler(w http.ResponseWriter, r *http.Request) { |
| 15 | habitShortID := strings.TrimSpace(r.URL.Query().Get("habit")) |
| 16 | |
| 17 | filename := "habbits-export.csv" |
| 18 | if habitShortID != "" { |
| 19 | habit, err := getHabitByShortID(a.DB, habitShortID) |
| 20 | if err != nil { |
| 21 | a.Log.Error("export get habit", "err", err) |
| 22 | web.RedirectWithError(w, r, "/settings", "Failed to export") |
| 23 | return |
| 24 | } |
| 25 | if habit == nil { |
| 26 | http.NotFound(w, r) |
| 27 | return |
| 28 | } |
| 29 | filename = "habbits-" + slugify(habit.Name) + ".csv" |
| 30 | } |
| 31 | |
| 32 | records, err := recordsForExport(a.DB, habitShortID) |
| 33 | if err != nil { |
| 34 | a.Log.Error("export records", "err", err) |
| 35 | web.RedirectWithError(w, r, "/settings", "Failed to export") |
| 36 | return |
| 37 | } |
| 38 | |
| 39 | w.Header().Set("Content-Type", "text/csv; charset=utf-8") |
| 40 | w.Header().Set("Content-Disposition", `attachment; filename="`+filename+`"`) |
| 41 | |
| 42 | cw := csv.NewWriter(w) |
| 43 | _ = cw.Write([]string{"recorded_at", "habit", "value_type", "unit", "value"}) |
| 44 | for _, rec := range records { |
| 45 | _ = cw.Write([]string{ |
| 46 | time.Unix(rec.RecordedAt, 0).Local().Format(time.RFC3339), |
| 47 | rec.HabitName, |
| 48 | rec.ValueType, |
| 49 | rec.Unit, |
| 50 | rec.Value, |
| 51 | }) |
| 52 | } |
| 53 | cw.Flush() |
| 54 | if err := cw.Error(); err != nil { |
| 55 | a.Log.Error("export csv write", "err", err) |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | // slugify makes a filesystem-safe token from a habit name for the download |
| 60 | // filename, e.g. "Sleep hours" -> "sleep-hours". |
| 61 | func slugify(s string) string { |
| 62 | var b strings.Builder |
| 63 | prevDash := false |
| 64 | for _, r := range strings.ToLower(strings.TrimSpace(s)) { |
| 65 | switch { |
| 66 | case r >= 'a' && r <= 'z', r >= '0' && r <= '9': |
| 67 | b.WriteRune(r) |
| 68 | prevDash = false |
| 69 | default: |
| 70 | if !prevDash && b.Len() > 0 { |
| 71 | b.WriteByte('-') |
| 72 | prevDash = true |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | out := strings.Trim(b.String(), "-") |
| 77 | if out == "" { |
| 78 | return "habit" |
| 79 | } |
| 80 | return out |
| 81 | } |