dynamic-content-formula

=ARRAYFORMULA(IF(A2:A <> "", "message1, first line of the sharing message - "&A2:A&" - by - "&B2:B&" - message2: "&E2:E& ". message3 - ", "")

// this is the formula for dynamic content when the share-action is called

for column and row reference
              checkout: "https://docs.google.com/spreadsheets/d/1gg_hEIso5udU3Vljk_EBqiFcGTdgf8SloyFDjfopkjE/edit#gid=0"
              
the "&Xn:X" where X is the column alphabet and n is the row number
              calls the cell corresponding to the input

in the given formula above
              =ARRAYFORMULA(IF(A2:A <> "", "message1, first line of the sharing message - "&A2:A&" - by - "&B2:B&" - message2: "&E2:E& ". message3 - ", "")
A2:A displays the book name
// refer to the google workspace file in the same repository to check the rows and columns corresponding to the data structure
B2:B displays the author's name
E2:E displays the description of the book. 
                            to link the wiki page of the book, user might add "&G2:G&" in the 2nd row while applying the arrayformula 

Shared message looks like this - 

Hello friend! I am sharing with you this wonderful book - Freakonomics - by - Steven D. Levitt, Stephen J. Dubner - and here is a brief description of it:
The book is a collection of articles written by Levitt, an economist who had gained a reputation for applying economic theory to diverse subjects not usually covered by "traditional" economists.
In Freakonomics, Levitt and Dubner argue that economics is, at root, the study of incentives.. Shared via MyBooks app (Manual text wrapping applied)