fix(cli): improve time parsing, interface consistency, and documentation accuracy

[platinummonkey]

Summary

Fixed several bugs found during testing that affected usability and documentation accuracy:

1. Time Parsing - Added RFC3339 timestamp support and flexible natural language formats
2. Interface Consistency - Made logs --from flag optional to match metrics behavior
3. Documentation - Corrected traces command status from implemented to not implemented
4. APM Services - Fixed filter parameter format, made env required, and fixed timestamp defaults

Changes

Time Parsing Improvements (pkg/util/time.go:20-67, cmd/logs_simple.go, cmd/metrics.go, cmd/rum.go)

Expanded Format Support:

• RFC3339 timestamps: 2026-02-11T08:49:36.831Z
• Short forms: 5m, 2h, 7d, 5s, 1w (original)
• Long forms: 5min, 5minutes, 2hr, 2hours, 3days, 1week (new)
• Plural variations: mins, hrs, secs, days, weeks (new)
• With spaces: "5 minutes", "2 hours" (new)
• Minus prefix: -5m, -2h gracefully handled as 5m, 2h (new)
• Case-insensitive: NOW, 5MIN, 2HOURS all work (new)
• Unix timestamps: 1704067200

Implementation:

• Consolidated duplicate time parsing logic to use pkg/util.ParseTimeParam and pkg/util.ParseTimeToUnixMilli
• Removed custom parseTimeString() and parseTimeParam() functions from cmd/logs_simple.go and cmd/metrics.go
• Enhanced regex to support long forms, spaces, and case-insensitive matching: (?i)^-?(\d+)\s*(s|sec|secs|second|seconds|m|min|mins|minute|minutes|...)
• Updated cmd/rum.go to use util package for time parsing
• Updated help text and documentation to show all supported formats

Interface Consistency (cmd/logs_simple.go:560-611)

• Made --from flag optional with default value "1h" for all logs commands (search, list, query, aggregate)
• Removed MarkFlagRequired("from") calls
• Logs commands now match metrics command interface pattern
• Users can now run pup logs list without specifying time range

Documentation Fixes (README.md:44, docs/COMMANDS.md:25,111)

• Updated README.md to mark Traces as ❌ not implemented (was incorrectly shown as ✅)
• Updated docs/COMMANDS.md to reflect Traces placeholder status
• Added guidance to use APM commands for trace data instead
• Removed misleading documentation about traces search/list/aggregate

APM Services Fixes (cmd/apm.go)

Issue 1: Filter Parameter Format

• Fixed services list command to use filter[env] parameter format
• Changed from params.Add("env", envFilter) to params.Add("filter[env]", envFilter)
• Now consistent with APM services stats command

Issue 2: Required Environment Flag

• Made --env flag required instead of having a default value
• The API requires this parameter and was rejecting requests
• Added validation: if envFilter == "" { return error }
• Clear error message: required flag(s) "env" not set

Issue 3: Timestamp Defaults

• Fixed issue where start and end times were 0 instead of proper defaults
• Package-level variables were shared across commands and not initialized
• Now calculates defaults at runtime: if startTime == 0 { startTime = time.Now().Add(-1 * time.Hour).Unix() }
• Prevents "Invalid Parameter" error from sending start=0&end=0 to API

Issue 4: Error Messages

• Added detailed debug information to error messages
• Shows full request path and all parameters being sent
• Helps identify API parameter issues: Request: GET /api/v2/apm/services?start=X&end=Y&filter[env]=prod

Test Updates

• pkg/util/time_test.go: Added comprehensive tests for all time format variations
  • Long forms (min, minutes, hr, hours, days, weeks)
  • Space-separated formats ("5 minutes", "2 hours")
  • Minus prefix handling (-5m, -2h)
  • Case-insensitive matching (NOW, 5MIN, 2HOURS)
  • Plural variations (mins, hrs, secs)
• cmd/logs_simple_test.go: Updated to test util.ParseTimeToUnixMilli
• Added test case for RFC3339 timestamp parsing
• cmd/metrics_test.go: Updated to use util.ParseTimeParam
• All tests passing ✅ (21 test cases for time parsing alone)

Testing

Unit Tests

• All existing tests pass
• Added 11 new test cases for flexible time formats
• Total: 21 test cases covering all time parsing variations
• RFC3339 timestamp parsing verified
• Case-insensitive matching verified
• Minus prefix handling verified

Manual Testing Verified

Time Parsing:

• RFC3339 timestamps: pup logs list --from "2026-02-11T08:49:36.831Z" ✅
• Long forms: pup logs list --from "5minutes" ✅
• With spaces: pup logs list --from "2 hours" ✅
• Minus prefix: pup logs list --from "-5m" ✅
• Case-insensitive: pup logs list --from "NOW" ✅
• Plural forms: pup logs list --from "3hrs" ✅

Interface Consistency:

• Logs commands work without --from flag (uses 1h default) ✅

APM Services:

• Clear error when --env not provided: Error: required flag(s) "env" not set ✅
• Proper timestamps sent to API (not 0) ✅
• Filter parameter correctly formatted as filter[env]=prod ✅

Build

• Build completes successfully ✅
• No breaking changes
• Full backward compatibility maintained

Impact

• Breaking Change: None - all changes are backwards compatible
• User Impact:
  • Significantly improved usability with natural language time formats
  • Support for standard RFC3339 timestamps from API responses
  • Logs commands easier to use with optional --from flag
  • More forgiving input parsing (case-insensitive, handles "5 minutes" or "5min")
  • APM services list now works correctly with proper error messages
• Documentation: More accurate representation of implemented vs placeholder commands
• Consistency: Logs and metrics commands now have consistent interfaces

Examples

Flexible Time Formats

# All of these now work:
pup logs list --from "5 minutes"
pup logs list --from "5min"
pup logs list --from "5m"
pup logs list --from "-5m"
pup logs list --from "5MIN"
pup logs list --from "3hrs"
pup logs list --from "2 hours"
pup logs list --from "2026-02-11T08:49:36.831Z"
pup logs list  # defaults to 1h

# Case-insensitive
pup metrics query --query="avg:system.cpu{*}" --from "NOW"
pup metrics query --query="avg:system.cpu{*}" --from "1HOUR"

APM Services

# Now requires --env explicitly (clearer error messages)
pup apm services list --env prod

# Automatically calculates proper timestamps
# start = 1 hour ago, end = now

Commits

1. fix(cli): improve time parsing, interface consistency, and documentation accuracy - Main fixes
2. fix(apm): set default environment filter to 'prod' for services list - Initial APM fix
3. feat(time): add flexible time format support with case-insensitive parsing - Enhanced time parsing
4. fix(apm): make env filter required for services list command - Made env required
5. fix(apm): add detailed error messages for services list debugging - Added debug info
6. fix(apm): calculate default timestamps at runtime for services list - Fixed timestamp issue

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🤖 Generated with Claude Code

[github-actions]

📊 Test Coverage Report

Overall Coverage: 81.7%

Threshold: 80% ✅

Coverage by Package

## Coverage by Package

- github.com/DataDog/pup/pkg/auth/callback/server.go:40: 81.2%
- github.com/DataDog/pup/pkg/auth/dcr/client.go:28: 100.0%
- github.com/DataDog/pup/pkg/auth/dcr/types.go:24: 100.0%
- github.com/DataDog/pup/pkg/auth/oauth/client.go:22: 100.0%
- github.com/DataDog/pup/pkg/auth/oauth/pkce.go:24: 85.7%
- github.com/DataDog/pup/pkg/auth/storage/factory.go:53: 94.7%
- github.com/DataDog/pup/pkg/auth/storage/keychain.go:44: 42.9%
- github.com/DataDog/pup/pkg/auth/storage/storage.go:58: 71.4%
- github.com/DataDog/pup/pkg/auth/types/types.go:23: 100.0%
- github.com/DataDog/pup/pkg/client/client.go:32: 94.4%
- github.com/DataDog/pup/pkg/config/alias.go:26: 100.0%
- github.com/DataDog/pup/pkg/config/config.go:22: 100.0%
- github.com/DataDog/pup/pkg/formatter/formatter.go:31: 100.0%
- github.com/DataDog/pup/pkg/useragent/useragent.go:32: 100.0%
- github.com/DataDog/pup/pkg/util/time.go:28: 96.0%

## Summary

total:								(statements)		81.7%

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📈 Coverage Status: ✅ PASSED - Coverage meets minimum threshold

_{Updated for commit d7d4189}