# hassraza/mood-based-music-recommender-main architecture

> Architecture diagram of the GitHub repository hassraza/mood-based-music-recommender-main, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/hassraza/mood-based-music-recommender-main
- Repository: https://github.com/hassraza/mood-based-music-recommender-main

## Overview

This is a mood-based music recommender: a user submits a mood and language, the browser obtains a song or playlist suggestion, searches Spotify, and plays the result. The README describes Gemini-backed interpretation, but the sampled browser code calls `/api/server`, whose handler returns a mock mood mapping; a separate `/server` handler calls Gemini. The browser code also handles Spotify authentication/search, embedded playback, and album-art color updates. The HTML and CSS are represented from the tree and README; their source was not sampled.

Main entry points: [`index.js`](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js) (Browser workflow), [`server.js`](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/server.js) (Mood routes), [`index.html`](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.html) (Mood interface), [`style.css`](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/style.css) (Responsive styling)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_experience["User experience"]
  node_interface["Mood interface<br/>[index.html]"]
  node_styles["Responsive styling<br/>[style.css]"]
  node_browser["Browser workflow<br/>[index.js]"]
end

subgraph group_recommendation["Mood recommendation"]
  node_express["Express app<br/>[server.js]"]
  node_mood_routes["Mood routes<br/>[server.js]"]
  node_gemini["Gemini generation<br/>[server.js]"]
end

subgraph group_delivery["Music delivery"]
  node_spotify_auth["Spotify OAuth<br/>[index.js]"]
  node_track_search["Track search<br/>[index.js]"]
  node_playlist_search["Playlist search<br/>[index.js]"]
  node_album_color["Album color update<br/>[index.js]"]
  node_player["Embed playback<br/>[index.js]"]
end

node_user(("Listener"))
node_gemini_service{{"Google Gemini"}}
node_spotify_accounts{{"Spotify accounts"}}
node_spotify_api{{"Spotify Web API"}}
node_color_thief{{"ColorThief"}}
node_spotify_player{{"Spotify player"}}

node_user -->|"enters mood"| node_interface
node_interface -->|"loads interaction"| node_browser
node_styles -->|"styles"| node_interface
node_browser -->|"POST /api/server"| node_mood_routes
node_mood_routes -->|"returns suggestion and credentials"| node_browser
node_express -->|"dispatches routes"| node_mood_routes
node_browser -->|"requests token"| node_spotify_auth
node_spotify_auth -->|"OAuth request"| node_spotify_accounts
node_spotify_accounts -->|"returns token"| node_spotify_auth
node_browser -->|"searches suggestion"| node_track_search
node_browser -->|"searches suggestion"| node_playlist_search
node_track_search -->|"searches tracks"| node_spotify_api
node_playlist_search -->|"searches playlists"| node_spotify_api
node_browser -->|"plays selected URI"| node_player
node_player -->|"loads and plays URI"| node_spotify_player
node_track_search -->|"passes album art"| node_album_color
node_playlist_search -->|"passes playlist art"| node_album_color
node_album_color -->|"extracts color"| node_color_thief
node_album_color -->|"updates background"| node_interface
node_mood_routes -.->|"/server requests generation"| node_gemini
node_gemini -.->|"generates suggestion"| node_gemini_service

click node_interface "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.html"
click node_styles "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/style.css"
click node_browser "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js"
click node_express "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/server.js"
click node_mood_routes "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/server.js"
click node_gemini "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/server.js"
click node_spotify_auth "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js"
click node_track_search "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js"
click node_playlist_search "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js"
click node_album_color "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js"
click node_player "https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_interface,node_styles,node_browser toneBlue
class node_express,node_mood_routes,node_gemini toneAmber
class node_spotify_auth,node_track_search,node_playlist_search,node_album_color,node_player,node_spotify_api toneMint
class node_user,node_gemini_service,node_spotify_accounts,node_color_thief,node_spotify_player toneIndigo
```

## Components

### User experience

- [Mood interface](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.html): `index.html`
- [Responsive styling](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/style.css): `style.css`
- [Browser workflow](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js): `index.js`

### Mood recommendation

- [Express app](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/server.js): `server.js`
- [Mood routes](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/server.js): `server.js`
- [Gemini generation](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/server.js): `server.js`

### Music delivery

- [Spotify OAuth](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js): `index.js`
- [Track search](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js): `index.js`
- [Playlist search](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js): `index.js`
- [Album color update](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js): `index.js`
- [Embed playback](https://github.com/hassraza/mood-based-music-recommender-main/blob/main/index.js): `index.js`

### Other components

- **Listener**
- **Google Gemini**
- **Spotify accounts**
- **Spotify Web API**
- **ColorThief**
- **Spotify player**

## Connections

- Listener → Mood interface: enters mood
- Mood interface → Browser workflow: loads interaction
- Responsive styling → Mood interface: styles
- Browser workflow → Mood routes: POST /api/server
- Mood routes → Browser workflow: returns suggestion and credentials
- Express app → Mood routes: dispatches routes
- Browser workflow → Spotify OAuth: requests token
- Spotify OAuth → Spotify accounts: OAuth request
- Spotify accounts → Spotify OAuth: returns token
- Browser workflow → Track search: searches suggestion
- Browser workflow → Playlist search: searches suggestion
- Track search → Spotify Web API: searches tracks
- Playlist search → Spotify Web API: searches playlists
- Browser workflow → Embed playback: plays selected URI
- Embed playback → Spotify player: loads and plays URI
- Track search → Album color update: passes album art
- Playlist search → Album color update: passes playlist art
- Album color update → ColorThief: extracts color
- Album color update → Mood interface: updates background
- Mood routes → Gemini generation: /server requests generation
- Gemini generation → Google Gemini: generates suggestion