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renamer/specs/007-sequence-numbering/tasks.md
Rogee 4021323984 feat(sequence-numbering): Implement sequence numbering command with comprehensive specifications 
- Removed obsolete tasks.md from 001-sequence-numbering.
- Added detailed requirements checklist for sequence numbering command.
- Created OpenAPI contract for sequence command, defining preview and apply endpoints.
- Developed data model for sequence numbering, outlining key entities and their relationships.
- Drafted implementation plan for sequence numbering command, including project structure and complexity tracking.
- Compiled quickstart guide for sequence numbering command, detailing prerequisites and usage examples.
- Documented research findings related to command validation, ordering, and conflict handling.
- Established feature specification for sequence numbering command, including user scenarios and acceptance criteria.
- Created tasks.md for 007-sequence-numbering, outlining phases and implementation strategy.
2025-11-03 11:02:34 +08:00

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Tasks: Sequence Numbering Command

Input: Design documents from /specs/001-sequence-numbering/ Prerequisites: plan.md, spec.md, research.md, data-model.md, contracts/, quickstart.md

Phase 1: Setup (Shared Infrastructure)

Purpose: Establish scaffolding required by all user stories.

  • T001 Create sequence package documentation stub in internal/sequence/doc.go
  • T002 Seed sample fixtures for numbering scenarios in testdata/sequence/basic/

Phase 2: Foundational (Blocking Prerequisites)

Purpose: Shared components that every sequence story depends on.

  • T003 Define sequence options struct with default values in internal/sequence/options.go
  • T004 Implement zero-padding formatter helper in internal/sequence/format.go
  • T005 Introduce plan and summary data structures in internal/sequence/plan.go

Checkpoint: Base package compiles with shared types ready for story work.

Phase 3: User Story 1 - Add Sequential Indices to Batch (Priority: P1) 🎯 MVP

Goal: Append auto-incremented suffixes (e.g., _001) to scoped files with deterministic ordering and ledger persistence.

Independent Test: renamer sequence --dry-run --path <dir> on three files shows _001, _002, _003; rerun with --yes updates ledger.

Tests for User Story 1

  • T006 [P] [US1] Add preview contract test covering default numbering in tests/contract/sequence_preview_test.go
  • T007 [P] [US1] Add integration flow test verifying preview/apply parity in tests/integration/sequence_flow_test.go

Implementation for User Story 1

  • T008 [US1] Implement candidate traversal adapter using listing scope in internal/sequence/traversal.go
  • T009 [US1] Generate preview plan with conflict detection in internal/sequence/preview.go
  • T010 [US1] Apply renames and record sequence metadata in internal/sequence/apply.go
  • T011 [US1] Wire Cobra sequence command execution in cmd/sequence.go
  • T012 [US1] Register sequence command on the root command in cmd/root.go

Checkpoint: Sequence preview/apply for default suffix behavior is fully testable and undoable.

Phase 4: User Story 2 - Control Number Formatting (Priority: P2)

Goal: Allow explicit width flag with zero padding and warning when auto-expanding.

Independent Test: renamer sequence --width 4 --dry-run shows _0001 suffixes; omitting width auto-expands on demand.

Tests for User Story 2

  • T013 [P] [US2] Add contract test for explicit width padding in tests/contract/sequence_width_test.go
  • T014 [P] [US2] Add integration test validating width flag and warnings in tests/integration/sequence_width_test.go

Implementation for User Story 2

  • T015 [US2] Extend options validation to handle width flag rules in internal/sequence/options.go
  • T016 [US2] Update preview planner to enforce configured width and warnings in internal/sequence/preview.go
  • T017 [US2] Parse and bind --width flag within Cobra command in cmd/sequence.go

Checkpoint: Users can control sequence width with deterministic zero-padding.

Phase 5: User Story 3 - Configure Starting Number and Placement (Priority: P3)

Goal: Support custom start offsets plus prefix/suffix placement with configurable separator.

Independent Test: renamer sequence --start 10 --placement prefix --separator "-" --dry-run produces 0010-file.ext entries.

Tests for User Story 3

  • T018 [P] [US3] Add contract test for start and placement variants in tests/contract/sequence_placement_test.go
  • T019 [P] [US3] Add integration test for start offset with undo coverage in tests/integration/sequence_start_test.go

Implementation for User Story 3

  • T020 [US3] Validate start, placement, and separator flags in internal/sequence/options.go
  • T021 [US3] Update preview generation to honor prefix/suffix placement and separators in internal/sequence/preview.go
  • T022 [US3] Persist placement and separator metadata during apply in internal/sequence/apply.go
  • T023 [US3] Wire --start, --placement, and --separator flags in cmd/sequence.go

Checkpoint: Placement and numbering customization scenarios fully supported with ledger fidelity.

Phase 6: Polish & Cross-Cutting Concerns

  • T024 [P] Document sequence command flags in docs/cli-flags.md
  • T025 [P] Log sequence feature addition in docs/CHANGELOG.md
  • T026 [P] Update command overview with sequence entry in README.md

Dependencies

  • Setup (Phase 1) → Foundational (Phase 2) → US1 (Phase 3) → US2 (Phase 4) → US3 (Phase 5) → Polish (Phase 6)
  • User Story dependencies: US1 completion unlocks US2; US2 completion unlocks US3.

Parallel Execution Opportunities

  • Contract and integration test authoring tasks (T006, T007, T013, T014, T018, T019) can run concurrently with implementation once shared scaffolding is ready.
  • Documentation polish tasks (T024–T026) can be executed in parallel after all story implementations stabilize.

Implementation Strategy

  1. Deliver MVP by completing Phase 1–3 (US1), enabling default sequence numbering with undo.
  2. Iterate with formatting controls (Phase 4) to broaden usability while maintaining preview/apply parity.
  3. Finish with placement customization (Phase 5) and polish tasks (Phase 6) before release.
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