Neo4j - How to build proper multi-dimensional query for my graph -

i have simple social-networking graph w/ users, friends, comments, likes etc. users can "own" items, comment on "items", "items". trying write cypher query returns "items" along w/ information display them in stream.

i have tried using optional match , collect , stuff, there part of result doesn't work.

specifically, given user(say user1), want return "items" that:

1. a specific user + friends own
2. show number of likes,
3. also show number of comments,
4. know if item owned me (so can hide "own" button in ui)
5. if item owned friends, want show name, image of 2 friends (but not more 2 friends if, say, 5 friends own item)

you can copy-paste below graph

// 3 users create (u1:user{name:"user1", image: "image1"}) create (u2:user{name:"user2", image: "image2"}) create (u3:user{name:"user3", image: "image3"})  //3 items create (i1:item{name:"item1"}) create (i2:item{name:"item2"}) create (i3:item{name:"item3"})   // ownership ..  //user1 owns 2 items create (u1)-[:owns]->(i1) create (u1)-[:owns]->(i2)   // user2 owns i2 , i3  create (u2)-[:owns]->(i2) create (u2)-[:owns]->(i3)  // user3 owns i2 , i3 (so i2 owned u1, u2 , u3; , i3 owned u2 , u3) create (u3)-[:owns]->(i2) create (u3)-[:owns]->(i3)       // friendship..  // user1 friend of both user2 , user3 create (u1)-[:friend_of]->(u2) create (u1)-[:friend_of]->(u3)   // comments ..  //user1 has commented on items owns create (u1i1:comment{text:"user1 comment on item1"}) create (u1)-[:commented]->(u1i1)-[:comment_for]->(i1)  create (u1i2:comment{text:"user1 comment on item2"}) create (u1)-[:commented]->(u1i2)-[:comment_for]->(i2)  //user 2 has commented on owns create (u2i2:comment{text:"user2 comment on item2"}) create (u2)-[:commented]->(u2i2)-[:comment_for]->(i2)  create (u2i3:comment{text:"user2 comment on item3"}) create (u2)-[:commented]->(u2i3)-[:comment_for]->(i3)   // likes ..  //user1 has liked user2's , user3's items create (u1)-[:liked]->(i2) create (u1)-[:liked]->(i3)  //user2 has liked user1's items create (u2)-[:liked]->(i1) 

let's build query step step:

specifically, given user(say user1), want return "items" that: specific user + friends own

match (u:user {name: "user1"})-[:friend_of*0..1]-(friend:user)-[:owns]-(i:item) u,i,       // know if item owned me (so can hide "own" button in ui)       sum(size((u)-[:owns]->(i))) > 0 user_owns,      // if item owned friends, want show name, image of 2 friends       collect({name:friend.name, image:friend.image})[0..2] friends  return u,i, user_owns, friends // show number of likes,        sum(size(()-[:liked]->(i))) like, // show number of comments,        sum(size(()-[:comment_for]->(i))) comments 

actually because such question, sat down , created graphgist documenting each step here.