Document Fuzzy Search process

docs/fuzzy_search_flow.md

@@ -0,0 +1,113 @@
+## Input Sources to printCharacters
+
+
+`printCharacters` is the main function that triggers the fuzzy search process if fuzzy search is enabled.
+
+```mermaid
+flowchart TD
+    subgraph User Actions
+        UA1[Character Search Input]
+        UA2[Tag Filter Click]
+        UA3[Folder Navigation]
+        UA4[Character Delete]
+        UA5[Character Create]
+        UA6[Character Import]
+        UA7[Clear All Filters]
+        UA8[Bulk Edit Operations]
+        UA9[Persona Changes]
+    end
+
+    subgraph API Events
+        API1[Character List Update]
+        API2[Group Update]
+        API3[Tag Update]
+    end
+
+    subgraph System Events
+        SE1[Page Load]
+        SE2[Content Manager Update]
+        SE3[Extension Events]
+    end
+
+    UA1 -->|triggers| PCD[printCharactersDebounced]
+    UA2 -->|triggers| PCD
+    UA7 -->|triggers| PCD
+    UA8 -->|triggers| PCD
+    UA9 -->|triggers| PCD
+    
+    UA3 -->|triggers| PC[printCharacters]
+    UA4 -->|triggers| PC
+    UA5 -->|triggers| PC
+    UA6 -->|triggers| PC
+
+    API1 -->|triggers| PC
+    API2 -->|triggers| PC
+    API3 -->|triggers| PC
+
+    SE1 -->|triggers| PC
+    SE2 -->|triggers| PC
+    SE3 -->|triggers| PC
+
+    PCD -->|debounced call| PC
+
+    style PC fill:#f96,stroke:#333
+    style PCD fill:#f96,stroke:#333
+```
+
+This diagram shows how `printCharacters` is called throughout the application:
+
+1. User Actions that trigger character list updates:
+   - Search input (debounced)
+   - Tag filter clicks (debounced)
+   - Folder navigation (direct)
+   - Character management operations (direct)
+
+2. API Events that require list refresh:
+   - Character list updates
+   - Group updates
+   - Tag system updates
+
+3. System Events:
+   - Initial page load
+   - Content manager updates
+   - Extension-triggered refreshes
+
+
+
+## Fuzzy Search Flow
+
+
+This diagram shows the flow of fuzzy search operations:
+```mermaid
+sequenceDiagram
+    participant Data as Data Sources
+    participant PC as printCharacters
+    participant GEL as getEntitiesList
+    participant FH as FilterHelper
+    participant AF as applyFilters
+    participant FS as FuzzySearch Functions
+    participant Cache as FuzzySearchCaches
+
+    Note over Data: Changes from:<br/>- Tags<br/>- Personas<br/>- World Info<br/>- Groups
+    
+    Data->>PC: All changes trigger printCharacters<br/>(direct or debounced)
+    
+    PC->>GEL: Call with {doFilter: true}
+    GEL->>FH: filterByTagState(entities)
+    GEL->>AF: entitiesFilter.applyFilters(entities)
+    
+    AF->>FH: Check scoreCache for existing results
+    FH-->>AF: Return cached scores if exist
+    
+    Note over FS: Filter functions include:<br/>SEARCH, <br/>FAV, <br/>GROUP, <br/>FOLDER, <br/>TAG, <br/>WORLD_INFO_SEARCH, <br/>PERSONA_SEARCH
+    AF->>FS: fuzzySearchCharacters/Groups/Tags
+    FS->>Cache: Check/Store results
+    
+    FS-->>AF: Return search results
+    AF->>FH: Cache new scores
+    AF-->>GEL: Return filtered entities
+    GEL-->>PC: Return final entities list
+    
+    PC->>Cache: clearFuzzySearchCaches()
+    Note over Cache: Cache is cleared at the end of<br/>each printCharacters call,<br/>ensuring fresh results for next search
+```