From f5f661acbad480fc6e074581f4a73ed3d8b316af Mon Sep 17 00:00:00 2001 From: Ryan Chen Date: Sun, 8 Feb 2026 09:39:49 -0500 Subject: [PATCH] docs(01-02): complete IMAP connection & email parsing plan Tasks completed: 2/2 - Task 1: IMAP connection service with authentication and folder listing - Task 2: Email body parser for multipart MIME messages SUMMARY: .planning/phases/01-foundation/01-02-SUMMARY.md --- .planning/STATE.md | 29 ++-- .../phases/01-foundation/01-02-SUMMARY.md | 135 ++++++++++++++++++ 2 files changed, 151 insertions(+), 13 deletions(-) create mode 100644 .planning/phases/01-foundation/01-02-SUMMARY.md diff --git a/.planning/STATE.md b/.planning/STATE.md index f5d5968..2f6cf7d 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -10,28 +10,28 @@ See: .planning/PROJECT.md (updated 2026-02-04) ## Current Position Phase: 1 of 4 (Foundation) -Plan: 1 of 2 (Database Models & Encryption) -Status: In progress -Last activity: 2026-02-08 — Completed 01-01-PLAN.md +Plan: 2 of 2 (IMAP Connection & Email Parsing) +Status: Phase complete +Last activity: 2026-02-08 — Completed 01-02-PLAN.md -Progress: [█░░░░░░░░░] 12.5% +Progress: [██░░░░░░░░] 25% ## Performance Metrics **Velocity:** -- Total plans completed: 1 -- Average duration: 11.6 minutes -- Total execution time: 0.2 hours +- Total plans completed: 2 +- Average duration: 12.3 minutes +- Total execution time: 0.4 hours **By Phase:** | Phase | Plans | Total | Avg/Plan | |-------|-------|-------|----------| -| 1. Foundation | 1/2 | 11.6 min | 11.6 min | +| 1. Foundation | 2/2 | 24.6 min | 12.3 min | **Recent Trend:** -- Last 5 plans: 01-01 (11.6 min) -- Trend: Establishing baseline +- Last 5 plans: 01-01 (11.6 min), 01-02 (13 min) +- Trend: Consistent velocity (~12 min/plan) *Updated after each plan completion* @@ -56,6 +56,9 @@ Recent decisions affecting current work: | FERNET_KEY as environment variable | 01-01 | 2026-02-08 | Simple key management, fails fast if missing | | Manual migration creation | 01-01 | 2026-02-08 | Docker port conflict, migration matches Aerich format | | 30-day expiration in model save() | 01-01 | 2026-02-08 | Business logic in domain model, consistent enforcement | +| Use logout() not close() for IMAP | 01-02 | 2026-02-08 | Proper TCP cleanup, prevents connection leaks | +| Prefer plain text over HTML | 01-02 | 2026-02-08 | Less boilerplate, better for RAG indexing | +| Modern EmailMessage API | 01-02 | 2026-02-08 | Handles encoding automatically, fewer errors | ### Pending Todos @@ -70,7 +73,7 @@ None yet. ## Session Continuity -Last session: 2026-02-08 14:15 UTC -Stopped at: Completed 01-01-PLAN.md (Database Models & Encryption) +Last session: 2026-02-08 15:01 UTC +Stopped at: Completed 01-02-PLAN.md (IMAP Connection & Email Parsing) Resume file: None -Next plan: 01-02-PLAN.md (IMAP connection service and email body parser) +Next plan: Phase 1 complete, ready for Phase 2 diff --git a/.planning/phases/01-foundation/01-02-SUMMARY.md b/.planning/phases/01-foundation/01-02-SUMMARY.md new file mode 100644 index 0000000..f705a21 --- /dev/null +++ b/.planning/phases/01-foundation/01-02-SUMMARY.md @@ -0,0 +1,135 @@ +--- +phase: 01-foundation +plan: 02 +subsystem: email +tags: [imap, aioimaplib, email-parsing, html2text, rfc822] + +# Dependency graph +requires: + - phase: 01-01 + provides: Email database models with encrypted credentials +provides: + - IMAP connection service with authentication and folder listing + - Email body parser for multipart MIME messages + - Dependencies: aioimaplib and html2text +affects: [01-03, 01-04, email-sync, account-management] + +# Tech tracking +tech-stack: + added: [aioimaplib>=2.0.1, html2text>=2025.4.15] + patterns: [async IMAP client, modern EmailMessage API, HTML-to-text conversion] + +key-files: + created: + - blueprints/email/imap_service.py + - blueprints/email/parser_service.py + modified: + - pyproject.toml + +key-decisions: + - "Use aioimaplib for async IMAP4_SSL operations" + - "Prefer plain text over HTML for RAG indexing" + - "Use logout() not close() for proper TCP cleanup" + - "Modern EmailMessage API with email.policy.default" + +patterns-established: + - "IMAP connection lifecycle: connect → operate → logout in finally block" + - "Email parsing: message_from_bytes with policy=default, get_body() for multipart handling" + - "HTML conversion: html2text with ignore_links=False for context preservation" + +# Metrics +duration: 13min +completed: 2026-02-08 +--- + +# Phase 01 Plan 02: IMAP Connection & Email Parsing Summary + +**Async IMAP client with aioimaplib for server authentication and folder listing, plus RFC822 email parser extracting text/HTML bodies using modern EmailMessage API** + +## Performance + +- **Duration:** 13 minutes +- **Started:** 2026-02-08T14:48:15Z +- **Completed:** 2026-02-08T15:01:33Z +- **Tasks:** 2/2 +- **Files modified:** 3 + +## Accomplishments + +- IMAP connection service with async authentication and proper cleanup +- Email body parser handling multipart MIME messages with text/HTML extraction +- Dependencies added to pyproject.toml (aioimaplib, html2text) +- Modern EmailMessage API usage with proper encoding handling +- HTML-to-text conversion when plain text unavailable + +## Task Commits + +Each task was committed atomically: + +1. **Task 1: IMAP connection service** - `6e4ee6c` (feat) +2. **Task 2: Email body parser** - `e408427` (feat) + +## Files Created/Modified + +- `blueprints/email/imap_service.py` - IMAPService class with connect/list_folders/close methods +- `blueprints/email/parser_service.py` - parse_email_body function for RFC822 parsing +- `pyproject.toml` - Added aioimaplib>=2.0.1 and html2text>=2025.4.15 + +## Decisions Made + +**1. IMAP Connection Lifecycle** +- **Decision:** Use `logout()` not `close()` for proper TCP cleanup +- **Rationale:** `close()` only closes the selected mailbox, `logout()` closes TCP connection +- **Impact:** Prevents connection leaks and quota exhaustion + +**2. Email Body Preference** +- **Decision:** Prefer plain text over HTML for "preferred" field +- **Rationale:** Plain text has less boilerplate, better for RAG indexing +- **Alternative:** Always convert HTML to text +- **Outcome:** Use plain text when available, convert HTML only when needed + +**3. Modern Email API** +- **Decision:** Use `email.policy.default` and `get_body()` method +- **Rationale:** Modern API handles encoding automatically, simplifies multipart handling +- **Alternative:** Legacy `Message.walk()` and `get_payload()` +- **Outcome:** Proper decoding, fewer encoding errors + +## Deviations from Plan + +None - plan executed exactly as written. + +All tasks completed according to specification. No bugs discovered, no critical functionality missing, no architectural changes required. + +## Issues Encountered + +None - implementation followed research patterns directly. + +The RESEARCH.md provided complete patterns for both IMAP connection and email parsing, eliminating guesswork and enabling straightforward implementation. + +## User Setup Required + +None - no external service configuration required. + +Dependencies will be installed in Docker environment via pyproject.toml. No API keys or credentials needed at this phase. + +## Next Phase Readiness + +**Phase 2: Account Management** is ready to begin. + +**Ready:** +- ✅ IMAP service can connect to mail servers +- ✅ Email parser can extract bodies from RFC822 messages +- ✅ Dependencies added to project +- ✅ Patterns established for async IMAP operations + +**What Phase 2 needs:** +- Use IMAPService to test IMAP connections +- Use parse_email_body to extract email content during sync +- Import: `from blueprints.email.imap_service import IMAPService` +- Import: `from blueprints.email.parser_service import parse_email_body` + +**No blockers or concerns.** + +--- +*Phase: 01-foundation* +*Completed: 2026-02-08*