feat: add task history via log command and info integration

Add engine/history.go with GetTaskHistory and diff-style FormatTaskHistory
that compares consecutive change_log entries to show only what changed.
Add cmd/log.go command for full task history. Integrate last 5 history
entries into FormatTaskDetail (info view) as a "Recent Changes" section.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-02-19 13:56:55 +01:00
parent 7aaaa86a0a
commit 32cc05a546
4 changed files with 277 additions and 1 deletions
+20
View File
@@ -2,6 +2,7 @@ package engine
import (
"fmt"
"strings"
"time"
"github.com/fatih/color"
@@ -187,6 +188,25 @@ func FormatTaskDetail(task *Task) string {
}
}
// Recent changes from change_log (last 5)
if entries, err := GetTaskHistory(task.UUID); err == nil && len(entries) > 0 {
t.AppendSeparator()
// Show last 5 entries
start := 0
if len(entries) > 5 {
start = len(entries) - 5
}
historyStr := FormatTaskHistory(entries[start:])
lines := strings.Split(strings.TrimSpace(historyStr), "\n")
for i, line := range lines {
label := ""
if i == 0 {
label = "History"
}
t.AppendRow(table.Row{label, line})
}
}
return t.Render()
}
+180
View File
@@ -0,0 +1,180 @@
package engine
import (
"fmt"
"strings"
"time"
"github.com/google/uuid"
)
// HistoryEntry represents a change_log entry for display.
type HistoryEntry struct {
ID int
Timestamp time.Time
ChangeType string // "create", "update", "delete"
Data string // raw key:value data from change_log
}
// GetTaskHistory returns change_log entries for a task UUID, ordered chronologically.
func GetTaskHistory(taskUUID uuid.UUID) ([]HistoryEntry, error) {
db := GetDB()
if db == nil {
return nil, fmt.Errorf("database not initialized")
}
rows, err := db.Query(
"SELECT id, changed_at, change_type, data FROM change_log WHERE task_uuid = ? ORDER BY id ASC",
taskUUID.String(),
)
if err != nil {
return nil, fmt.Errorf("failed to query change_log: %w", err)
}
defer rows.Close()
var entries []HistoryEntry
for rows.Next() {
var e HistoryEntry
var changedAt int64
if err := rows.Scan(&e.ID, &changedAt, &e.ChangeType, &e.Data); err != nil {
return nil, fmt.Errorf("failed to scan change_log entry: %w", err)
}
e.Timestamp = time.Unix(changedAt, 0)
entries = append(entries, e)
}
return entries, nil
}
// FormatTaskHistory returns a diff-style history display.
// Compares consecutive entries and shows only what changed.
func FormatTaskHistory(entries []HistoryEntry) string {
if len(entries) == 0 {
return "No history found.\n"
}
var sb strings.Builder
var prevFields map[string]string
for _, entry := range entries {
ts := entry.Timestamp.Format("2006-01-02 15:04")
currentFields := parseChangeData(entry.Data)
if entry.ChangeType == "create" {
// Show creation summary
desc := currentFields["description"]
priority := currentFields["priority"]
tags := currentFields["tags"]
line := fmt.Sprintf("%s created \"%s\"", ts, desc)
if priority != "" && priority != "D" {
line += fmt.Sprintf(" priority:%s", priority)
}
if tags != "" {
for _, tag := range strings.Split(tags, ",") {
line += fmt.Sprintf(" +%s", strings.TrimSpace(tag))
}
}
sb.WriteString(line + "\n")
} else if entry.ChangeType == "delete" {
sb.WriteString(fmt.Sprintf("%s deleted\n", ts))
} else if entry.ChangeType == "update" {
if prevFields == nil {
// No previous entry to diff against, show as generic update
sb.WriteString(fmt.Sprintf("%s updated\n", ts))
} else {
// Diff against previous
changes := diffFields(prevFields, currentFields)
if len(changes) == 0 {
sb.WriteString(fmt.Sprintf("%s updated (tags changed)\n", ts))
} else {
for i, change := range changes {
if i == 0 {
sb.WriteString(fmt.Sprintf("%s modified %s\n", ts, change))
} else {
sb.WriteString(fmt.Sprintf(" %s\n", change))
}
}
}
}
}
prevFields = currentFields
}
return sb.String()
}
// parseChangeData parses key:value lines from change_log data.
func parseChangeData(data string) map[string]string {
fields := make(map[string]string)
for _, line := range strings.Split(data, "\n") {
line = strings.TrimSpace(line)
if line == "" {
continue
}
parts := strings.SplitN(line, ": ", 2)
if len(parts) == 2 {
fields[parts[0]] = parts[1]
}
}
return fields
}
// diffFields compares two field maps and returns human-readable change descriptions.
func diffFields(prev, curr map[string]string) []string {
var changes []string
// Skip internal/timestamp fields
skip := map[string]bool{
"uuid": true, "created": true, "modified": true,
}
// Check fields in current that differ from prev
for key, currVal := range curr {
if skip[key] {
continue
}
prevVal, existed := prev[key]
if !existed {
changes = append(changes, fmt.Sprintf("%s: (none) → %s", key, formatFieldValue(key, currVal)))
} else if prevVal != currVal {
changes = append(changes, fmt.Sprintf("%s: %s → %s", key, formatFieldValue(key, prevVal), formatFieldValue(key, currVal)))
}
}
// Check fields removed (in prev but not in current)
for key, prevVal := range prev {
if skip[key] {
continue
}
if _, exists := curr[key]; !exists {
changes = append(changes, fmt.Sprintf("%s: %s → (none)", key, formatFieldValue(key, prevVal)))
}
}
return changes
}
// formatFieldValue formats a change_log field value for human display.
func formatFieldValue(key, value string) string {
// For timestamp fields, try to format as dates
switch key {
case "due", "scheduled", "wait", "until", "start", "end":
if t, err := parseUnixString(value); err == nil {
return t.Format("2006-01-02")
}
case "status":
return value // already human-readable
}
return value
}
// parseUnixString parses a unix timestamp string.
func parseUnixString(s string) (time.Time, error) {
var ts int64
_, err := fmt.Sscanf(s, "%d", &ts)
if err != nil {
return time.Time{}, err
}
return time.Unix(ts, 0), nil
}