jedmund-svelte/docs/admin-modernization-plan.md
Justin Edmund a0c8dda3d3 docs: update admin modernization plan with Phase 2 completion
Updates to reflect current progress:
- Added progress overview showing Phase 2 complete
- Marked Task 3 (Project Form) as complete with implementation details
- Marked Task 6 (Autosave Store) as complete with feature summary
- Updated rollout strategy with phase completion status
- Documented 42% reduction in ProjectForm size (720 → 417 lines)

Phase 2 achievements:
- Composable form stores with Svelte 5 runes
- Reusable draft recovery and navigation guards
- Generic autosave store for all forms
- Manual QA complete

Next up: Phase 3 (List utilities & primitives)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-08 00:40:30 -07:00

275 lines
14 KiB
Markdown
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

# Admin Interface Modernization Plan
## Progress Overview
**Current Status:** Phase 2 Complete ✅ (3 of 4 phases done)
-**Phase 0:** Runed integration (Task 0)
-**Phase 1:** Auth & data foundation (Tasks 1, 2)
-**Phase 2:** Form modernization (Tasks 3, 6)
- 🔄 **Phase 3:** List utilities & primitives (Tasks 4, 5) - **NEXT**
- 📋 **Phase 4:** Styling harmonization (Task 7)
**Recent Completion:** Task 3 - Project Form Modularization (Oct 7, 2025)
- Reduced ProjectForm from 720 → 417 lines (42%)
- Created reusable composable stores and helpers
- Manual QA complete
---
## Goals
- Deliver an admin surface that uses idiomatic Svelte 5 + Runes with first-class TypeScript.
- Replace client-side authentication fallbacks with server-validated sessions and consistent typing.
- Reduce duplication across resource screens (projects, posts, media) by extracting reusable list, form, and dropdown primitives.
- Improve reliability by centralizing data loading, mutation, and invalidation logic.
## Guiding Principles
- Prefer `+layout.server.ts`/`+page.server.ts` with typed `load` results over `onMount` fetches; use `satisfies` clauses for strong typing.
- Use Svelte runes (`$derived`, `$state`, `$effect`) inside components, but push cross-route state into stores or `load` data.
- Model mutations as form `actions` (with optional `enhance`) to avoid bespoke `fetch` calls and to keep optimistic UI localized.
- Encode shared behaviors (filters, dropdowns, autosave) as reusable helpers or actions so we can verify and test them once.
- Annotate shared helpers with explicit generics, exported types, and narrow `ReturnType` helpers for downstream safety.
- Leverage the [Runed](https://runed.dev) utility library where it meaningfully reduces rune boilerplate while keeping bundle size in check.
---
## Task 0 Adopt Runed Utility Layer
**Objective:** Introduce Runed as a shared dependency for rune-focused utilities, formalize usage boundaries, and pilot it in list/data flows.
### Steps
1. Add the dependency: `pnpm add runed` (or equivalent) and ensure type declarations are available to the TypeScript compiler.
2. Create `src/lib/runed/README.md` documenting approved utilities (e.g., `asyncState`, `memo`, `taskQueue`, `clickOutside`) and guidelines for contributions.
3. Establish a thin wrapper export in `src/lib/runed/index.ts` so future refactors can swap implementations without touching call sites.
4. Update Task 2 prototype (projects list) to replace manual async state handling with `resource` and memoized filters via `$derived` helpers.
5. Evaluate bundle impact via `pnpm run build` and record findings in the doc, adjusting the allowed utility list if necessary.
**Current Adoption:** Projects index page now uses `resource` for data fetching and `onClickOutside` for dropdowns as the pilot integration.
### Implementation Notes
- Prefer wrapping Runed utilities so downstream components import from a single local module (`import { asyncState } from '$lib/runed'`).
- Pair Runed helpers with `satisfies` clauses to keep returned state strongly typed.
- Audit for tree-shaking compliance; Runed utilities are individually exported to support dead code elimination.
### Dependencies
- None; execute before Task 1 to unlock downstream usage.
---
## Task 1 Server-Side Authentication & Session Flow
**Objective:** Move credential validation out of the browser and expose typed session data to all admin routes.
### Steps
1. Create `src/routes/admin/+layout.server.ts` that:
- Reads an HttpOnly cookie (e.g., `admin_session`).
- Validates credentials via shared server utility (reusable by API routes).
- Returns `{ user }` (or `null`) while throwing `redirect(303, '/admin/login')` for unauthenticated requests.
2. Add `src/routes/admin/login/+page.server.ts` with:
- A `load` that returns any flash errors.
- A default `actions` export that validates the submitted password, sets the cookie via `cookies.set`, and `redirect`s into `/admin`.
3. Update `src/routes/admin/+layout.svelte` to:
- Remove `onMount`, `$page` derived auth checks, and `goto` usage.
- Read the session via `const { user } = await parent()` and gate rendering accordingly.
- Handle the login route by checking `data` from parent rather than client state.
4. Replace all `localStorage.getItem('admin_auth')` references (e.g., `Admin API`, media page) with reliance on server session (see Task 2).
### Implementation Notes
- Use `LayoutServerLoad` typing: `export const load = (async (event) => { ... }) satisfies LayoutServerLoad;`.
- Define a `SessionUser` type in `src/lib/types/session.ts` to share across routes and endpoint handlers.
- For Basic auth compatibility during transition, consider reading the existing header and issuing the new cookie so legacy API calls keep working.
### Dependencies
- Requires shared credential validation utility (see Task 2 Step 1).
- Requires infra support for HttpOnly cookie (name, maxAge, secure flag).
---
## Task 2 Unified Data Fetching & Mutation Pipeline
**Objective:** Standardize how admin pages load data and mutate resources with TypeScript-checked flows.
### Steps
1. Extract a server helper `src/lib/server/admin/authenticated-fetch.ts` that wraps `event.fetch`, injects auth headers if needed, and narrows error handling.
2. Convert project, post, media list routes to use server loads:
- Add `+page.server.ts` returning `{ items, filters }` with `depends('admin:projects')`-style cache keys.
- Update `+page.svelte` files to read `export let data` and derive view state from `data.items`.
- Use `$derived` to compute filtered lists inside the component rather than re-fetching.
3. Replace manual `fetch` calls for mutations with typed form actions:
- Define actions in `+page.server.ts` (`export const actions = { toggleStatus: async (event) => { ... } }`).
- In Svelte, use `<form use:enhance>` or `form` wrappers to submit with `fetch`, reading `event.detail.result`.
4. After successful mutations, call `invalidate('admin:projects')` (client side) or return `invalidate` instructions within actions to refresh data.
### Implementation Notes
- Leverage `type ProjectListData = Awaited<ReturnType<typeof load>>` for consumer typing.
- Use discriminated union responses from actions (`{ type: 'success'; payload: ... } | { type: 'error'; message: string }`).
- For media pagination, accept `url.searchParams` in the server load and return `pagination` metadata for the UI.
### Dependencies
- Requires Task 1 cookie/session handling.
- Coordinate with API endpoint typing to avoid duplicating DTO definitions (reuse from `src/lib/schemas/...`).
---
## Task 3 Project Form Modularization & Store Extraction ✅
**Status:****COMPLETED** (Oct 7, 2025) - Commit `34a3e37`
**Objective:** Split `ProjectForm.svelte` into composable, typed stores and view modules.
### Implementation Summary
Created reusable form patterns following Svelte 5 best practices:
**New Files:**
- `src/lib/stores/project-form.svelte.ts` (114 lines) - Store factory with `$state`, `$derived`, validation
- `src/lib/admin/useDraftRecovery.svelte.ts` (62 lines) - Generic draft restoration with auto-detection
- `src/lib/admin/useFormGuards.svelte.ts` (56 lines) - Navigation guards, beforeunload, Cmd+S shortcuts
- `src/lib/components/admin/DraftPrompt.svelte` (92 lines) - Reusable draft prompt UI component
**Refactored:**
- `src/lib/components/admin/ProjectForm.svelte` - Reduced from 720 → 417 lines (42% reduction)
### Key Achievements
- All form state centralized in composable store
- Draft recovery, navigation guards fully extracted and reusable
- Type-safe with full generic support (`useDraftRecovery<TPayload>`)
- Patterns ready for PostForm, MediaForm, etc.
- Build passes, manual QA complete
### Implementation Notes
- State returned directly from factories (no `readonly` wrappers needed in Svelte 5)
- Used `$state`, `$derived`, `$effect` runes throughout
- Store factory uses `z.infer<typeof projectSchema>` for type alignment
- Exported `type ProjectFormStore = ReturnType<typeof createProjectFormStore>` for downstream usage
### Dependencies
- ✅ Task 2 (data fetching) - complete
- ✅ Task 6 (autosave store) - complete
---
## Task 4 Shared List Filtering Utilities
**Objective:** Remove duplicated filter/sort code across projects, posts, and media.
### Steps
1. Introduce `src/lib/admin/listFilters.ts` providing `createListFilters<T>(items, config)` that returns:
- Rune-backed state stores for selected filters (`$state`),
- `$derived` filtered/sorted output,
- Helpers `setFilter`, `reset`, and computed counts.
2. Define filter configuration types using generics (`FilterConfig<T, K extends keyof T>` etc.) for compile-time safety.
3. Update each admin list page to:
- Import the helper, pass initial data from the server load, and drive the UI from the returned stores.
- Replace manual event handlers with `filters.set('status', value)` style interactions.
4. Add lightweight unit tests (Vitest) for the utility to confirm sort stability and predicate correctness.
### Implementation Notes
- Use `export interface ListFiltersResult<T>` to codify the return signature.
- Provide optional `serializer` hooks for search params so UI state can round-trip URL query strings.
### Dependencies
- Task 2 ensures initial data arrives via server load.
---
## Task 5 Dropdown, Modal, and Click-Outside Primitives
**Objective:** Centralize interaction patterns to reduce ad-hoc document listeners.
### Steps
1. Create `src/lib/actions/clickOutside.ts` that dispatches a `custom:event` when the user clicks outside an element; write in TypeScript with generics for event detail types.
2. Replace manual `document.addEventListener` usages in `ProjectListItem`, `PostListItem`, media dropdowns with `use:clickOutside` and component-local state.
3. Evolve `BaseDropdown.svelte` into `Dropdown.svelte` + `DropdownTrigger.svelte` + `DropdownMenu.svelte` components backed by a shared store (manages open state, keyboard navigation).
4. Standardize action buttons to use `<button type="button">` and move repeated SVG markup into icon components (`src/lib/icons`).
### Implementation Notes
- Ensure dropdown components accept slots typed via `Snippet` and expose `export type DropdownContext` for advanced use cases.
- Add focus-trap support with optional dependency on `@floating-ui/dom` if necessary, wrapped in a utility to keep types consistent.
### Dependencies
- No external dependencies beyond existing component imports; can be implemented incrementally per list.
---
## Task 6 Autosave Store & Draft Persistence ✅
**Status:****COMPLETED** (Earlier in Phase 2)
**Objective:** Turn autosave logic into a typed store for reuse across forms.
### Implementation Summary
Created `src/lib/admin/autoSave.svelte.ts` with:
- Generic `createAutoSaveStore<TPayload, TResponse>(options)` factory
- Reactive status using `$state<AutoSaveStatus>`
- Methods: `schedule()`, `flush()`, `destroy()`, `prime()`
- Debounced saves with abort controller support
- Online/offline detection with automatic retry
- Draft persistence fallback when offline
**Documented in:** `docs/autosave-completion-guide.md`
### Key Features
- Fully typed with TypeScript generics
- Integrates with `draftStore.ts` for localStorage fallback
- Used successfully in refactored ProjectForm
- Reusable across all admin forms
### Implementation Notes
- Returns reactive `$state` for status tracking
- Accepts `onSaved` callback with `prime()` helper for baseline updates
- Handles concurrent saves with abort controller
- Automatically transitions from 'saved' → 'idle' after delay
### Dependencies
- ✅ Task 2 (mutation endpoints) - complete
---
## Task 7 Styling & Theming Harmonization
**Objective:** Reduce SCSS duplication and make layout adjustments easier.
### Steps
1. Create `src/lib/styles/admin.css` exposing CSS variables for spacing, typography, and colors consumed by admin components.
2. Replace per-component `@import '$styles/variables.scss'` with `@use` in a single scoped stylesheet or with CSS variable access.
3. Introduce layout wrappers (e.g., `AdminLayoutShell.svelte`) that centralize container widths and card backgrounds, removing repeated SCSS from `AdminPage`, `AdminNavBar`, etc.
4. Audit component classes to ensure consistent BEM-ish naming and remove redundant selectors (e.g., duplicate `.loading` styles across pages).
### Implementation Notes
- Consider PostCSS or Sveltes `<style global>` for variable declarations; keep component styles scoped.
- Document variable names and usage in a short appendix within this doc once finalized.
### Dependencies
- Largely independent; best executed after structural refactors to avoid churn.
---
## Rollout Strategy
### ✅ Phase 0: Runed Integration (Complete)
- ✅ Task 0: Runed utility layer integrated and documented
- Projects index page using `resource` for data fetching
- `onClickOutside` implemented for dropdowns
### ✅ Phase 1: Auth & Data Foundation (Complete)
- ✅ Task 1: Server-side authentication with session flow
- ✅ Task 2: Unified data fetching & mutation pipeline
- HttpOnly cookie authentication working
- Server loads with typed `satisfies` clauses
### ✅ Phase 2: Form Modernization (Complete)
- ✅ Task 6: Autosave store with draft persistence
- ✅ Task 3: Project form modularization with composable stores
- Reduced ProjectForm from 720 → 417 lines (42%)
- Reusable patterns ready for other forms
### 🔄 Phase 3: List Utilities & Primitives (Next)
- ⏳ Task 4: Shared list filtering utilities
- ⏳ Task 5: Dropdown, modal, and click-outside primitives
### 📋 Phase 4: Styling Harmonization (Future)
- ⏳ Task 7: Styling & theming cleanup
---
Each task section above can serve as a standalone issue. Ensure QA includes regression passes for projects, posts, and media operations after every phase.