The Sanskrit love poem Kokila Sandeśa was modeled upon the Meghadūta of Kālidāsa, which was in turn primarily based on what type of Indian writings?
Kokila Sandeśa: The Kokila Sandeśa (Sanskrit: कोकिलसन्देश) or "The Message of The Koel" is a Sanskrit love poem written by Uddanda Śāstrī in the 15th century AD. Kokila Sandeśa:  The poem belongs to the sandeśa kāvya, (‘messenger poem’) genre and is modelled upon the Meghadūtaof Kālidāsa. Kālidāsa: Kālidāsa was a Classical Sanskrit writer, widely regarded as the greatest poet and dramatist in the Sanskrit language. Kālidāsa:  His plays and poetry are primarily based on the Indian Puranas.
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