path: root/docs/content/appendix/meeting_notes.tex

\subsection*{17.01.2024}

\textbf{Participants}

\begin{itemize}
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item Kickoff
    \item Understanding the Task
    \item Device
    \item Taler
\end{itemize}

\textbf{Questions}
\begin{itemize}
    \item What am I going to do?
    \item Which components are roughly involved?
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item Setup Thesis Document
    \item GNU Taler Copyright Assignment
    \item SSH-Public Key for git
    \item Inspect taler-exchange-wirewatch
\end{itemize}

\textbf{Decisions}
\begin{itemize}
    \item Implement process 'cashless2ecash' as part of Taler-Exchange
    \item Wallet initializes process by scanning QR code like in the 'cash2ecash' showcase
    \begin{itemize}
        \item cash2ecash was implented by the guy named "windfisch" on mattermost
    \end{itemize}
\end{itemize}

\subsection*{20.02.2024}

\textbf{Participants}

\begin{itemize}
    \item Jung Florian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item Introduce each other and explain ideas
    \item Discuss nonce2ecash draft
    \item Discuss who wants to do what
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item I send Flo a plan of what I'm going to do until when (approximately)
    \item I update the sequence diagram as discussed and send the openapi spec to Flo for review.
\end{itemize}

\textbf{Decisions}
\begin{itemize}
    \item We can establish a generic approach for both our cases. Therefore the abstraction of \textit{Providers} will be implemented. The \textit{Providers} abstract and generalize some endpoint which can accept digital cash in any form (Credit Card, Cash, and so on) and give the Exchange the guarantee, that the digital cash will eventually be transferred to the Exchange.
    \item The verification at the provider from the perspective of the exchange must be optional (withdrawing at an ATM will not get any better than the amount the ATM sends to the Excahnge in the payment notification). Therefore an additional request to the provider will not bring any benefit.
\end{itemize}

\textbf{Notes}
\begin{itemize}
    \item Flo wants to create a Reserve containing digital cash from the ATM. He then wants to trigger a peer to peer transaction. And therefore this reserve deals as guarantee to the Exchange. This flow is possible if the provider is controlled, which in my case is not given (Wallee is a company and I cannot easily alter their source code to open a reserve)
\end{itemize}

\subsection*{22.02.2024}

\textbf{Participants}

\begin{itemize}
    \item Hiltgen Alain
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item Task description
    \item Deeper understanding of the topic established?
    \item I contacted Florian Jung (alias Windfisch) and we bespoke his work on cash2ecash.
\end{itemize}

\textbf{Questions}
\begin{itemize}
    \item Repository of Wallee Application will be different than 'cashless2ecash'? No
    \item Wallee: Master Password? Password received by Ben
    \item Wallee: Which SDK to use? Till-SDK (API to Wallee-Backend)
    \item How do we want to handle different currencies? How about currencies like Bitcoin? Currency is determined by the currency of the exchange.
\end{itemize}

\subsection*{06.03.2024}

\textbf{Participants}

\begin{itemize}
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item API Spec nonce2ecash
    \item Database Spec nonce2ecash
\end{itemize}

\textbf{Questions}
\begin{itemize}
    \item How can I create a reserve from the mapping table?
    \item Taler / Wallee : Which nonce to use? How to generate the nonce? Is there a preferred kind to generate nonces within taler?  
    \item Do we add a maximal limit amount for a withdrawal on the side of the Taler Exchange?
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item write API specification in .rst format (see /docs/core/api-*.rst in taler docs git)
    \item use Bank integration API
    \item write SQL schema and generate UML using schema-spy instead of writing UML.
\end{itemize}

\subsection*{13.03.2024}

\textbf{Participants}

\begin{itemize}
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item SQL Schema of nonce2ecash.
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item Add rst file to official docs Repository
    \item Add proper versioning to the SQL script.
\end{itemize}

\subsection*{20.03.2024}

\textbf{Participants}

\begin{itemize}
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item Payto Specification.
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item Specify payto-uri scheme in GANA repo
\end{itemize}

\subsection*{20.03.2024 - 2}

\textbf{Participants}

\begin{itemize}
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item Architecture
    \item Payto
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item Look at Wire Gateway and Bank Integration API as specification of an API and not as individual components of Taler. C2EC must implement those specification in order to integrate into the Taler ecosystem.
\end{itemize}

\subsection*{27.03.2024}

\textbf{Participants}

\begin{itemize}
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item Discussion of the Architecture documentation
    \item Feedback of Ben and Christian
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item Integrate Feedback into documentation
    \item Use official docs repo to specify the API (e.g. Bank-Integration API and Wire Gateway API specification)
    \item No meeting next week.
\end{itemize}

\subsection*{10.04.2024}

\textbf{Participants}

\begin{itemize}
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item Discussion of the C2EC code.
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item Use ini-format to parse config
    \item Add support for PGHOST environment variable
    \item Rename config properties to be compliant with other Taler repositories.
    \begin{itemize}
        \item serve
        \item bind
        \item unix-path-mode
        \item etc.
    \end{itemize}
    \item For the attestation there is the additional case that neither confirm nor abort is an option and instead retries are required. 
    \item Remove doubled abstractions (Abstracting attestation is not necessary)
\end{itemize}

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\subsection*{TEMPLATE}

\textbf{Participants}

\begin{itemize}
    \item Fehrensen Benjamin
    \item Grothoff Christian
    \item H\"aberli Joel
\end{itemize}

\textbf{Topics}
\begin{itemize}
    \item
\end{itemize}

\textbf{Questions}
\begin{itemize}
    \item 
\end{itemize}

\textbf{Action points}
\begin{itemize}
    \item
\end{itemize}

\textbf{Decisions}
\begin{itemize}
    \item
\end{itemize}
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