-- allium: 1
-- bDS Media Editor View
-- Scope: UI content area — media editing surface
-- Distilled from: MediaEditor.tsx

-- Describes the layout and behaviour of the media editor rendered in
-- the main content area when a media tab is active.

use "./media.allium" as media
use "./i18n.allium" as i18n

-- ─── Media editor ─────────────────────────────────────────────

value MediaEditorView {
    media_id: String
    is_image: Boolean
    file_name: String                   -- originalName, read-only
    mime_type: String                   -- read-only
    file_size: String                   -- formatted, read-only
    dimensions: String?                 -- "W x H" if width/height exist, read-only
    title: String?                      -- editable text input
    alt_text: String?                   -- editable text input
    caption: String?                    -- editable textarea (3 rows)
    tags: String?                       -- comma-separated text input
    author: String?                     -- editable text input
    language: String?                   -- select from supported languages
    translations: List<MediaTranslationItem>
    linked_posts: List<LinkedPostItem>
}

value MediaTranslationItem {
    language: String
    flag_emoji: String
    title: String?
    alt_text: String?
    caption: String?
}

value LinkedPostItem {
    post_id: String
    title: String
}

value PostPickerOverlay {
    search_query: String
    results: List<PostPickerResult>
    overflow_count: Integer?             -- shown as "and N more" if > 0
}

surface PostPickerOverlaySurface {
    context overlay: PostPickerOverlay

    exposes:
        overlay.search_query
        for result in overlay.results:
            result.post_id
            result.title
        overlay.overflow_count when overlay.overflow_count != null
}

value PostPickerResult {
    post_id: String
    title: String
}

config {
    media_post_picker_max_results: Integer = 10
}

surface MediaEditorSurface {
    context editor: MediaEditorView

    exposes:
        editor.file_name
        editor.mime_type
        editor.file_size
        editor.dimensions when editor.dimensions != null
        editor.is_image
        editor.title
        editor.alt_text
        editor.caption
        editor.tags
        editor.author
        editor.language
        for t in editor.translations:
            t.language
            t.flag_emoji
            t.title
        for lp in editor.linked_posts:
            lp.post_id
            lp.title

    provides:
        MediaAIImageAnalysisRequested(editor.media_id)
            when editor.is_image
        MediaDetectLanguageRequested(editor.media_id)
        MediaTranslateMetadataRequested(editor.media_id, target_language)
        MediaReplaceFileRequested(editor.media_id)
        MediaSaveRequested(editor.media_id)
        MediaDeleteRequested(editor.media_id)
        MediaLinkToPostRequested(editor.media_id)
        MediaTranslationEditClicked(editor.media_id, language)
        MediaTranslationRefreshClicked(editor.media_id, language)
        MediaTranslationDeleteClicked(editor.media_id, language)
        MediaUnlinkPostRequested(editor.media_id, post_id)

    @guarantee HeaderLayout
        -- Header bar with media display name.
        -- Actions (right side): Quick Actions dropdown, Replace File button,
        --   Save button, Delete button (danger style).

    @guarantee QuickActionsDropdown
        -- Dropdown menu in header with three entries:
        --   AI Image Analysis (robot icon) — only shown for image/* MIME types.
        --   Detect Language (magnifier icon).
        --   Translate Metadata (globe icon).

    @guarantee PreviewArea
        -- Images: rendered via bds-media:// protocol with cache-busting timestamp.
        -- Non-images: SVG file icon placeholder + original filename text.

    @guarantee MetadataForm
        -- Form fields in order:
        --   File Name (disabled input), MIME Type (disabled input),
        --   Size + Dimensions row (disabled inputs),
        --   Title (text input), Alt Text (text input), Caption (textarea, 3 rows),
        --   Tags (comma-separated text input), Author (text input),
        --   Language (select from supported languages).

    @guarantee TranslationsSection
        -- Shown only when language is set.
        -- List of existing translations: flag emoji + language name + title.
        -- Per-translation actions: click to edit inline, refresh button, delete button.
        -- "No translations" message when list is empty.

    @guarantee LinkedPostsSection
        -- "Link to Post" button opens inline post picker overlay.
        -- List of currently linked posts with document icon. Click navigates to post tab.
        -- Per-post unlink button (×).
        -- "Not linked to any posts" message when list is empty.

    @guarantee PostPickerOverlay
        -- Inline overlay positioned near "Link to Post" button (not a modal).
        -- Search input filtering unlinked posts by title.
        -- Up to config.media_post_picker_max_results results displayed.
        -- "and N more" text when total exceeds limit.
        -- Click result: links media to selected post, closes overlay.

    @guarantee NoAutoSave
        -- Unlike the post editor, media editor requires explicit Save button.
}

-- ─── Media editor actions ─────────────────────────────────────

rule MediaAIImageAnalysis {
    when: MediaAIImageAnalysisRequested(media_id)
    -- Gate: airplane mode check (see action_patterns.allium AIOperationGating)
    -- Only available for image/* MIME types (button hidden for non-images)
    -- Uses image analysis model (vision-capable, not title model)
    -- Input: AI-optimized JPEG thumbnail (448x448, generated on import)
    -- Response: suggested title, alt text, caption
    -- Opens AISuggestionsModal with 3 fields (title, alt, caption)
    -- On confirm: applies checked fields, triggers explicit save
}

rule MediaDetectLanguage {
    when: MediaDetectLanguageRequested(media_id)
    -- Gate: airplane mode check
    -- Input: concatenation of title + alt + caption text
    -- Response: detected language code
    -- Immediately persists to media record (no modal, no confirmation)
    -- Triggers sidecar rewrite
}

rule MediaTranslateMetadata {
    when: MediaTranslateMetadataRequested(media_id, target_language)
    -- Gate: airplane mode check
    -- Opens language picker modal (same pattern as post translate)
    -- Two-step process:
    --   1. If source language not set: detect it first (auto-persist)
    --   2. Translate title, alt, caption to target language via title model
    -- Creates/updates media translation record
    -- Writes translated sidecar file: {path}.{lang}.meta
}

rule MediaReplaceFile {
    when: MediaReplaceFileRequested(media_id)
    -- Opens native file dialog (no MIME type filter)
    -- Copies selected file over existing media file path
    -- If image: regenerates thumbnails synchronously (awaited)
    -- Preview area updates with cache-busting timestamp query param
}

rule MediaDeleteAction {
    when: MediaDeleteRequested(media_id)
    -- Opens ConfirmDeleteModal (custom modal, not native dialog)
    -- Shows: media display name, linked posts count and list
    -- Two buttons: Cancel, Delete (destructive red style)
    -- On confirm: deletes file, sidecar, thumbnails, all translations,
    --   post-media links, FTS index entry
    -- Closes media tab, sidebar removes item
    -- See engine_side_effects.allium DeleteMediaSideEffects
}

rule MediaLinkToPost {
    when: MediaLinkToPostRequested(media_id)
    -- Opens inline post picker overlay (not a modal, positioned near button)
    -- Search input filtering unlinked posts by title
    -- Up to config.media_post_picker_max_results results shown
    -- "and N more" text if results exceed limit
    -- Click links media to selected post (updates sidecar linkedPostIds)
    -- Linked posts list refreshes immediately
}

rule MediaTranslationEdit {
    when: MediaTranslationEditClicked(media_id, language)
    -- Loads translation fields inline (title, alt, caption) for that language
    -- Edit in place, save persists to translated sidecar {path}.{lang}.meta
}

rule MediaTranslationRefresh {
    when: MediaTranslationRefreshClicked(media_id, language)
    -- Gate: airplane mode check
    -- Re-translates from source language to target via title model
    -- Overwrites existing translation fields
    -- Rewrites translated sidecar file
}

rule MediaTranslationDelete {
    when: MediaTranslationDeleteClicked(media_id, language)
    -- Deletes translation record from DB
    -- Deletes translated sidecar file: {path}.{lang}.meta
    -- No confirmation dialog
}