chore: data request flow

[vancauwe]

This issue will map out theoretically how the user will interact with different components from data browsing to data download.
For simplification, the back-end of the UI was not made explicit in the sequence diagram.

sequenceDiagram
    participant C as Chemist
    participant S as Solr (UI)
    participant Q as Qlever (UI)
    participant D-UI as Download Data Page
    participant QDB as Qlever (Database)
    participant S3 as S3 Database
    
    C->>S: search through data for NMR
    C->>Q: 
    Note over C,Q: (Sparql query) GET all NMR
    S->>C: return NMR data URIs
    Q->>C: 
    C->>D-UI: go to page
    C->>D-UI: input NMR data URIs (copy/paste or file?)
    D-UI-->>D-UI: 
    D-UI->>QDB: from NMR data URIs get NMR data filepath in S3
    Note over D-UI, QDB: (Sparql query) GET data filepath for data URI
    D-UI->>S3: for each NMR data filepath, get data from S3
    Note over D-UI, S3: (API call) GET data from data filepath
    S3->>D-UI: return data files 
    D-UI->>QDB: get high level metadata for each NMR data file
    Note over D-UI, QDB: (Sparql query) GET campaign+batch data for data URI
    D-UI->>QDB: get metadata for each NMR data file
    Note over D-UI,QDB: (Sparql query) GET metadata tied to data URI
    D-UI -->> D-UI: bundle data and metadata in Zip file
    D-UI->>C: return Zip for download

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[sabinem]

@vancauwe I think you should add a data catalog and also solr as search option, like this below:

sequenceDiagram
    participant C as Chemist
    participant F as Frontend: Datacatalog
    participant S as Solr (UI)
    participant Q as Qlever (UI)
    participant D-UI as Download Data Page
    participant QDB as Qlever (Database)
    participant S3 as S3 Database
    
    C ->> F: search on Frontend with Option Solr and Sparql
    Note over F,Q: (Option: Sparql query) GET all NMR
    F->>Q: search through data for NMR
    Q->>F: return NMR data URIs (Sparql)
    Note over F,S: (Option Solr query) GET all NMR
    F->>S: 
    S->>F: return NMR data URIs (Solr)
    F->>D-UI: go to page
    F->>D-UI: input NMR data URIs (copy/paste or file?)
    D-UI-->>D-UI: 
    D-UI->>QDB: from NMR data URIs get NMR data filepath in S3
    Note over D-UI, QDB: (Sparql query) GET data filepath for data URI
    D-UI->>S3: for each NMR data filepath, get data from S3
    Note over D-UI, S3: (API call) GET data from data filepath
    S3->>D-UI: return data files 
    D-UI->>QDB: get high level metadata for each NMR data file
    Note over D-UI, QDB: (Sparql query) GET campaign+batch data for data URI
    D-UI->>QDB: get metadata for each NMR data file
    Note over D-UI,QDB: (Sparql query) GET metadata tied to data URI
    D-UI -->> D-UI: bundle data and metadata in Zip file
    D-UI->>C: return Zip for download

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