Provide a platform to monitor, manage and post in closed Facebook Groups by Keywords

I need to build a platform that manages social media monitoring on Facebook and then manages posting for us. We use personal (individual) accounts on Facebook. We ask to be and are added to private/closed groups. We are not the admin of these groups and will need to be added by the administrators first before we can see the content. Examples of these groups: [login to view URL] [login to view URL] [login to view URL] [login to view URL] In these groups, people post things for sale and post comments and questions. Typical posts might be (and often include photos): Aura Aurash‎ to Narre Warren Berwick Casey Dandenong Buy Sell Just now · Aloe Vera $10 – Pick up from Narre Warren! Very healthy plants!The price is $10 per each plant!Just serious buyers,please!Pick up in 48h!Advertised elsewhere! Michelle Friend‎ to Cranbourne and surrounding districts Buy, Swap and Sell 5 mins · Melbourne · $10 still in box pick up Pakenham Gordon Berry‎ to Werribee Buy, Swap and Sell and Surrounds 27 mins · Need someone to remove weeds from my backyard, $200 – Werribee, Victoria Brooke Gartland‎ to Buy an Sell Wonthaggi Area 1 hr · Looking for lawn person FREE – Wonthaggi, Victoria Looking for someone who can come do our lawns on a regular basis. Reliable and reasonably priced please. We need to search these groups and posts for key words, identifying the group the post was posted to, and it’s content/details. We then want to be able to respond to these posts directly through the platform, both manually and automatically if at all possible. The last two posts are of interest to our business, and would be identified by weeds, backyard & lawn as ‘Gardening’ keywords. In both cases we would want to post a reply, something along the lines of the following (for a Gardening reply): Hey <Name> - Check out www.help.forsale. It’s free to search and compare Gardening helpers based on their rates per hour, availability and skills. You can then hire them for a known per hour price. Hope you might check it out! There will be: - Multiple groups. Expect 500+, up to 1000 even. - Multiple personal Facebook accounts to connect to these groups. IE might be a ratio of 1 to 50. - Multiple keywords related to multiple help types. Gardening is a help type, Handyman is a help type, there are multiple help types and each will have key words. We would also like to be able to send a post out to a group or multiple or all groups at once advertising our business. It would be good if this could be automated for set days and times. A sample post might be: Hi everyone. We’ve just launched [login to view URL] and we’re a local business connecting local Helpers and Helpees. If you need some help, be it gardening, a handyman or some other odd job, we’d love for you to check it out. It’s free to search and compare Helpers. It’s also free for Helpers to list with us, so would love to see you online if you are looking for little jobs, extra money. We will need to be able to: - Turn off the automatic responses on a group by group basis - Add and remove groups - Add and remove user Facebook accounts - Record data on number of posts identified, responded too and key words. - Track users who post matching posts with keyword