Adobe indesign automation script writing

I need a script for indesign that does the following for my template (I will send you the template): 1) Places texts (one text per file) on the verso side of the template (on template page 1) from an excel file 2) Places images (one image per file) from a folder on the recto side (on template page 2) 3) Exports a pdf file (with my settings) containing page 1 and 2 4) Exports a jpg file (thumbnail file) containing page 2 Result: I have multiple pdf’s and jpg at once in a folder Vertical images must be placed (centered first) and than placed at much as possible to the top of the layer (within the border I have set in my template) Horizontal images must be placed (centered first) to the top-left side of the layer (within the border I have set in my template) Fitting -> fit content proportionally