666 lines
20 KiB
OCaml
666 lines
20 KiB
OCaml
open Db
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exception Invalid_post of string
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type board = Babillard
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let int_of_board = function
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| Babillard -> 1
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let pp_board fmt = function
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| Babillard -> Format.fprintf fmt "babillard"
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let board_of_int = function
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| 1 -> Babillard
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| _ -> raise (Invalid_argument "board_of_int")
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type op =
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{ id : string
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; board : board
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; date : int
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; nick : string
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; subject : string
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; comment : string
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; image : string * string
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; tags : string list
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; longitude : float
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; latitude : float
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; replies : string list
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; citations : string list
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}
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type reply =
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{ id : string
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; parent_id : string
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; date : int
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; nick : string
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; comment : string
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; image : (string * string) option
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; tags : string list
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; replies : string list
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; citations : string list
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}
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type post =
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| Op of op
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| Reply of reply
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(* ('a option, string) result *)
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let ( let** ) o f =
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match o with
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| Error e -> Error (Format.sprintf "db error: %s" (Caqti_error.show e))
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| Ok None -> Error "db error"
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| Ok (Some x) -> f x
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(* ('a, string) result *)
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let ( let* ) o f =
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match o with
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| Error e -> Error (Format.sprintf "db error: %s" (Caqti_error.show e))
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| Ok x -> f x
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module Q = struct
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let create_post_user_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_user (post_id TEXT, nick TEXT, PRIMARY \
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KEY(post_id), FOREIGN KEY(nick) REFERENCES user(nick));"
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(* post_id -> OP's post_id *)
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let create_post_parent_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_parent (post_id TEXT, parent_id TEXT, \
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FOREIGN KEY(post_id) REFERENCES post_user(post_id),\n\
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\ FOREIGN KEY(parent_id) REFERENCES post_user(post_id));"
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let create_thread_board_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS thread_board (thread_id TEXT, board INT, \
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FOREIGN KEY(thread_id) REFERENCES post_user(post_id));"
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(* TODO useless? *)
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let create_thread_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS threads (thread_id TEXT, post_id TEXT,\n\
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\ FOREIGN KEY(thread_id) REFERENCES post_user(post_id),\n\
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\ FOREIGN KEY(post_id) REFERENCES post_user(post_id));"
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let create_post_replies_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_replies (post_id TEXT, reply_id TEXT, \
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FOREIGN KEY(post_id) REFERENCES post_user(post_id),\n\
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\ FOREIGN KEY(reply_id) REFERENCES post_user(post_id));"
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let create_post_citations_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_citations (post_id TEXT, cited_id TEXT, \
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FOREIGN KEY(post_id) REFERENCES post_user(post_id),\n\
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\ FOREIGN KEY(cited_id) REFERENCES post_user(post_id));"
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let create_post_date_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_date (post_id TEXT, date INT, FOREIGN \
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KEY(post_id) REFERENCES post_user(post_id));"
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let create_post_comment_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_comment (post_id TEXT, comment TEXT, \
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FOREIGN KEY(post_id) REFERENCES post_user(post_id));"
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let create_post_image_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_image (post_id TEXT, image_name TEXT, \
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image_content, FOREIGN KEY(post_id) REFERENCES post_user(post_id));"
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let create_post_gps_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_gps (post_id TEXT, lat FLOAT, lng FLOAT ,\n\
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\ FOREIGN KEY(post_id) REFERENCES post_user(post_id));"
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let create_post_subject_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_subject (post_id TEXT, subject TEXT, \
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FOREIGN KEY(post_id) REFERENCES post_user(post_id));"
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let create_post_tags_table =
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Caqti_request.exec Caqti_type.unit
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"CREATE TABLE IF NOT EXISTS post_tags (post_id TEXT, tag TEXT, FOREIGN \
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KEY(post_id) REFERENCES post_user(post_id));"
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let upload_post_id =
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Caqti_request.exec
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Caqti_type.(tup2 string string)
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"INSERT INTO post_user VALUES (?,?);"
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let upload_post_gps =
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Caqti_request.exec
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Caqti_type.(tup3 string float float)
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"INSERT INTO post_gps VALUES (?,?,?);"
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let upload_post_image =
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Caqti_request.exec
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Caqti_type.(tup3 string string string)
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"INSERT INTO post_image VALUES (?,?,?);"
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let upload_post_reply =
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Caqti_request.exec
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Caqti_type.(tup2 string string)
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"INSERT INTO post_replies VALUES (?,?);"
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let upload_post_comment =
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Caqti_request.exec
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Caqti_type.(tup2 string string)
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"INSERT INTO post_comment VALUES (?,?);"
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let upload_post_subject =
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Caqti_request.exec
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Caqti_type.(tup2 string string)
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"INSERT INTO post_subject VALUES (?,?);"
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let upload_post_tag =
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Caqti_request.exec
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Caqti_type.(tup2 string string)
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"INSERT INTO post_tags VALUES (?,?);"
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let upload_post_date =
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Caqti_request.exec
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Caqti_type.(tup2 string int)
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"INSERT INTO post_date VALUES (?,?);"
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let upload_to_thread =
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Caqti_request.exec
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Caqti_type.(tup2 string string)
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"INSERT INTO threads VALUES (?,?);"
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let upload_thread_board =
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Caqti_request.exec
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Caqti_type.(tup2 string int)
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"INSERT INTO thread_board VALUES (?,?);"
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let upload_post_parent =
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Caqti_request.exec
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Caqti_type.(tup2 string string)
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"INSERT INTO post_parent VALUES (?,?);"
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let get_post_nick =
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Caqti_request.find Caqti_type.string Caqti_type.string
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"SELECT nick FROM post_user WHERE post_id=?;"
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let get_post_comment =
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Caqti_request.find Caqti_type.string Caqti_type.string
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"SELECT comment FROM post_comment WHERE post_id=?;"
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let get_post_image_content =
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Caqti_request.find_opt Caqti_type.string Caqti_type.string
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"SELECT image_content FROM post_image WHERE post_id=?;"
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let get_post_image_name =
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Caqti_request.find_opt Caqti_type.string Caqti_type.string
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"SELECT image_name FROM post_image WHERE post_id=?;"
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let get_post_tags =
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Caqti_request.collect Caqti_type.string Caqti_type.string
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"SELECT tag FROM post_tags WHERE post_id=?;"
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let get_post_date =
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Caqti_request.find Caqti_type.string Caqti_type.int
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"SELECT date FROM post_date WHERE post_id=?;"
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let get_post_citations =
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Caqti_request.collect Caqti_type.string Caqti_type.string
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"SELECT post_id FROM post_citations WHERE reply_id=?;"
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let get_post_replies =
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Caqti_request.collect Caqti_type.string Caqti_type.string
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"SELECT reply_id FROM post_replies WHERE post_id=?;"
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let get_thread_posts =
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Caqti_request.collect Caqti_type.string Caqti_type.string
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"SELECT post_id FROM threads WHERE thread_id=?;"
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let count_thread_posts =
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Caqti_request.find Caqti_type.string Caqti_type.int
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"SELECT COUNT(post_id) FROM threads WHERE thread_id=?;"
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(* TODO return bool *)
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let is_thread =
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Caqti_request.find_opt Caqti_type.string Caqti_type.string
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"SELECT thread_id FROM threads WHERE thread_id=? LIMIT 1;"
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let get_thread_board =
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Caqti_request.find Caqti_type.string Caqti_type.int
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"SELECT board FROM thread_board WHERE thread_id=? LIMIT 1;"
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let get_post_subject =
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Caqti_request.find_opt Caqti_type.string Caqti_type.string
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"SELECT subject FROM post_subject WHERE post_id=?;"
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let get_post_gps =
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Caqti_request.find_opt Caqti_type.string
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Caqti_type.(tup2 float float)
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"SELECT lat, lng FROM post_gps WHERE post_id=?;"
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let list_threads =
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Caqti_request.collect Caqti_type.int Caqti_type.string
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"SELECT thread_id FROM thread_board WHERE board=?;"
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end
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let () =
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let tables =
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[ Q.create_post_user_table
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; Q.create_post_parent_table
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; Q.create_thread_table
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; Q.create_thread_board_table
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; Q.create_post_replies_table
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; Q.create_post_citations_table
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; Q.create_post_date_table
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; Q.create_post_comment_table
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; Q.create_post_image_table
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; Q.create_post_gps_table
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; Q.create_post_subject_table
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; Q.create_post_tags_table
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]
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in
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if
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List.exists Result.is_error
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(List.map (fun query -> Db.exec query ()) tables)
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then
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Dream.warning (fun log -> log "can't create table")
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(* TODO: Is this safe? *)
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(*TODO fix bad link if post in other thread*)
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let parse_comment comment =
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let handle_word w =
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let trim_w = String.trim w in
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(* '>' is '>' after html_escape *)
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match String.starts_with ~prefix:{|>>|} trim_w with
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| false -> (w, None)
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| true -> (
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let sub_w = String.sub trim_w 8 (String.length trim_w - 8) in
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match Uuidm.of_string sub_w with
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| None -> (w, None)
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| Some _ ->
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let new_w = Format.sprintf {|<a href="#%s">%s</a>|} sub_w w in
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(new_w, Some sub_w) )
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in
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let handle_line l =
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let trim_w = String.trim l in
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(*insert quote*)
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let line =
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match
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String.starts_with ~prefix:{|>|} trim_w
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&& not (String.starts_with ~prefix:{|>>|} trim_w)
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with
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| false -> l
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| true -> {|<span class="quote">|} ^ l ^ {|</span>|}
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in
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let words = String.split_on_char ' ' line in
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let words, cited_posts =
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List.fold_left
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(fun (acc_words, acc_cited_posts) w ->
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match handle_word w with
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| w, Some cited_id -> (w :: acc_words, cited_id :: acc_cited_posts)
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| w, None -> (w :: acc_words, acc_cited_posts) )
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([], []) words
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in
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let words = List.rev words in
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let line =
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Format.asprintf "%a"
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(Format.pp_print_list
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~pp_sep:(fun fmt () -> Format.fprintf fmt " ")
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Format.pp_print_string )
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words
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in
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(line, cited_posts)
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in
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let comment = String.trim comment in
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let lines = String.split_on_char '\n' comment in
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let lines, cited_posts =
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List.fold_left
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(fun (acc_lines, acc_cited_posts) l ->
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let line, cited_posts = handle_line l in
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(line :: acc_lines, cited_posts @ acc_cited_posts) )
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([], []) lines
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in
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let lines = List.rev lines in
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(*insert <br>*)
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let comment =
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Format.asprintf "%a"
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(Format.pp_print_list
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~pp_sep:(fun fmt () -> Format.fprintf fmt "@.<br>")
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Format.pp_print_string )
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lines
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in
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(* remove duplicate cited_id *)
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let cited_posts = List.sort_uniq (fun _ _ -> 1) cited_posts in
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(comment, cited_posts)
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let view_post ?is_thread_preview post_id =
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let* nick = Db.find Q.get_post_nick post_id in
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let* comment = Db.find Q.get_post_comment post_id in
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let* date = Db.find Q.get_post_date post_id in
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let* image_name = Db.find_opt Q.get_post_image_name post_id in
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let* _tags = Db.fold Q.get_post_tags (fun tag acc -> tag :: acc) post_id [] in
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let* replies =
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Db.fold Q.get_post_replies (fun reply_id acc -> reply_id :: acc) post_id []
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in
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(* TODO special stuff for OP
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let* _subject = Db.find_opt Q.get_post_subject post_id in
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let* _latlng = Db.find_opt Q.get_post_gps post_id in
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*)
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let image_view =
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match image_name with
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| Some image_name ->
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(*TODO thumbnails *)
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Format.sprintf
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{|
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<div class="postImageContainer">
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<a title="%s" href="/post_pic/%s">
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<img class= "postImage" src="/post_pic/%s" loading="lazy">
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</a>
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</div>
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|}
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image_name post_id post_id
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| None -> ""
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in
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let pp_print_reply fmt reply =
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Format.fprintf fmt {|<a class="replyLink" href="#%s">>>%s</a>|} reply reply
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in
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let pp_print_replies =
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Format.asprintf {|<div class="repliesLink">%a</div> |}
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(Format.pp_print_list ~pp_sep:Format.pp_print_space pp_print_reply)
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in
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let replies_view =
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match is_thread_preview with
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| None -> pp_print_replies replies
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| Some () -> (
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let res_nb = Db.find Q.count_thread_posts post_id in
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match res_nb with
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| Error _ -> ""
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| Ok ((0 | 1) as nb) -> Format.sprintf "%d reply" (nb - 1)
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| Ok nb -> Format.sprintf "%d replies" (nb - 1) )
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in
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(* TODO how to display date, I should probably render everything on the client*)
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let post_info_view =
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Format.sprintf
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{|
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<div class="postInfo"
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<span class=nick>%s</span>
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<span class=date unix-time="%d"></span>
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<span class=postNo>
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<a href="#%s" title="Link to this post">No.</a>
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<a href="javascript:insert_quote('%s')" "class=quoteLink title="Reply to this post">%s</a>
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</span>
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%s
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</div>|}
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nick date post_id post_id post_id replies_view
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in
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let post_view =
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Format.sprintf
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{|
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<div class="container">
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<div class="post" id="%s">
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%s
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%s
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<blockquote class="postComment">%s</blockquote>
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</div>
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</div>
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|}
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post_id post_info_view image_view comment
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in
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Ok post_view
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let preview_thread thread_id = view_post ~is_thread_preview:() thread_id
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let view_thread thread_id =
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let** _ = Db.find_opt Q.is_thread thread_id in
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let* thread_posts = Db.fold Q.get_thread_posts List.cons thread_id [] in
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(*order by date *)
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let dates =
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List.map (fun post_id -> Db.find Q.get_post_date post_id) thread_posts
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in
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match List.find_opt Result.is_error dates with
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| Some (Error e) -> Error (Format.sprintf "db error: %s" (Caqti_error.show e))
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| Some (Ok _) -> assert false
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| None ->
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let dates = List.map Result.get_ok dates in
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let posts_dates = List.combine thread_posts dates in
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let sorted_posts_dates =
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List.sort (fun (_, a) (_, b) -> compare a b) posts_dates
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in
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let posts, _ = List.split sorted_posts_dates in
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let view_posts = List.map view_post posts in
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let view_posts =
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List.map Result.get_ok (List.filter Result.is_ok view_posts)
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in
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let view_posts =
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Format.asprintf "%a"
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(Format.pp_print_list
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~pp_sep:(fun fmt () -> Format.fprintf fmt "\r\n")
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Format.pp_print_string )
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view_posts
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in
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Ok view_posts
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let upload_post post =
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let post_id, parent_id, date, nick, comment, image, tags, citations, op_data =
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match post with
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| Op
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{ id
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; board
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; date
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; nick
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; subject
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; comment
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; image
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; tags
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; longitude
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; latitude
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; replies = _replies
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; citations
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} ->
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let op_data = Some (board, subject, longitude, latitude) in
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(id, id, date, nick, comment, Some image, tags, citations, op_data)
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| Reply
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{ id
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; parent_id
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; date
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; nick
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; comment
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; image
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; tags
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; replies = _replies
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; citations
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} ->
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(id, parent_id, date, nick, comment, image, tags, citations, None)
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in
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let* _res_post_id = Db.exec Q.upload_post_id (post_id, nick) in
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let* _res_comment = Db.exec Q.upload_post_comment (post_id, comment) in
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let* _res_date = Db.exec Q.upload_post_date (post_id, date) in
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let* _res_thread = Db.exec Q.upload_to_thread (parent_id, post_id) in
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let* _res_image =
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match image with
|
|
| None -> Ok ()
|
|
| Some (image_name, image_content) ->
|
|
Db.exec Q.upload_post_image (post_id, image_name, image_content)
|
|
in
|
|
let* _res_parent = Db.exec Q.upload_post_parent (post_id, parent_id) in
|
|
let* _res_tags =
|
|
match
|
|
List.find_opt Result.is_error
|
|
(List.map (fun tag -> Db.exec Q.upload_post_tag (post_id, tag)) tags)
|
|
with
|
|
| Some (Error e) -> Error e
|
|
| Some _ -> assert false
|
|
| None -> Ok ()
|
|
in
|
|
let* _res_citations =
|
|
match
|
|
List.find_opt Result.is_error
|
|
(List.map
|
|
(fun cited_id -> Db.exec Q.upload_post_reply (cited_id, post_id))
|
|
citations )
|
|
with
|
|
| Some (Error e) -> Error e
|
|
| Some _ -> assert false
|
|
| None -> Ok ()
|
|
in
|
|
match op_data with
|
|
| None -> Ok post_id
|
|
| Some (board, subject, lng, lat) ->
|
|
let* _res_board =
|
|
Db.exec Q.upload_thread_board (post_id, int_of_board board)
|
|
in
|
|
let* _res_gps = Db.exec Q.upload_post_gps (post_id, lat, lng) in
|
|
let* _res_subject = Db.exec Q.upload_post_subject (post_id, subject) in
|
|
Ok post_id
|
|
|
|
let make_reply ~comment ?image ~tags ~parent_id nick =
|
|
let comment = Dream.html_escape comment in
|
|
let tags = Dream.html_escape tags in
|
|
if Option.is_none (Uuidm.of_string parent_id) then
|
|
Error "invalid thread id"
|
|
else if String.length comment > 10000 then
|
|
Error "invalid comment"
|
|
else
|
|
let image =
|
|
match image with
|
|
| Some (Some image_name, image_content) ->
|
|
Some (Dream.html_escape image_name, image_content)
|
|
| Some (None, image_content) ->
|
|
(* make up random name if no name was given *)
|
|
let image_name = Uuidm.to_string (Uuidm.v4_gen random_state ()) in
|
|
Some (image_name, image_content)
|
|
| None -> None
|
|
in
|
|
let is_valid =
|
|
match image with
|
|
| None -> true
|
|
| Some (_, image_content) -> is_valid_image image_content
|
|
in
|
|
if not is_valid then
|
|
Error "invalid image"
|
|
else if String.length tags > 1000 then
|
|
Error "invalid tags"
|
|
else
|
|
(* TODO latlng validation? *)
|
|
let tag_list = Str.split (Str.regexp " +") tags in
|
|
let id = Uuidm.to_string (Uuidm.v4_gen random_state ()) in
|
|
let date = int_of_float (Unix.time ()) in
|
|
let comment, citations = parse_comment comment in
|
|
let reply =
|
|
Reply
|
|
{ id
|
|
; parent_id
|
|
; date
|
|
; nick
|
|
; comment
|
|
; image
|
|
; tags = tag_list
|
|
; replies = []
|
|
; citations
|
|
}
|
|
in
|
|
upload_post reply
|
|
|
|
let make_op ~comment ~image ~tags ~subject ~lat ~lng ~board nick =
|
|
let comment = Dream.html_escape comment in
|
|
let tags = Dream.html_escape tags in
|
|
let subject = Dream.html_escape subject in
|
|
if String.length comment > 10000 then
|
|
Error "invalid comment"
|
|
else
|
|
let image =
|
|
match image with
|
|
| Some image_name, image_content ->
|
|
(Dream.html_escape image_name, image_content)
|
|
| None, image_content ->
|
|
(* make up random name if no name was given *)
|
|
let image_name = Uuidm.to_string (Uuidm.v4_gen random_state ()) in
|
|
(image_name, image_content)
|
|
in
|
|
let is_valid =
|
|
match image with
|
|
| _, image_content -> is_valid_image image_content
|
|
in
|
|
if not is_valid then
|
|
Error "invalid image"
|
|
else if String.length tags > 1000 then
|
|
Error "invalid tags"
|
|
else
|
|
(* TODO latlng validation? *)
|
|
let is_valid_latlng = true in
|
|
if not is_valid_latlng then
|
|
Error "Invalid coordinate"
|
|
else if String.length subject > 600 then
|
|
Error "Invalid subject"
|
|
else
|
|
let tag_list = Str.split (Str.regexp " +") tags in
|
|
let id = Uuidm.to_string (Uuidm.v4_gen random_state ()) in
|
|
let date = int_of_float (Unix.time ()) in
|
|
let comment, citations = parse_comment comment in
|
|
let op =
|
|
Op
|
|
{ id
|
|
; board
|
|
; date
|
|
; nick
|
|
; subject
|
|
; comment
|
|
; image
|
|
; tags = tag_list
|
|
; longitude = lng
|
|
; latitude = lat
|
|
; replies = []
|
|
; citations
|
|
}
|
|
in
|
|
upload_post op
|
|
|
|
let get_markers board =
|
|
let* thread_id_list =
|
|
Db.fold Q.list_threads List.cons (int_of_board board) []
|
|
in
|
|
let markers_res =
|
|
List.map
|
|
(fun thread_id ->
|
|
let** lat, lng = Db.find_opt Q.get_post_gps thread_id in
|
|
match preview_thread thread_id with
|
|
| Ok content -> Ok (lat, lng, content, thread_id)
|
|
| Error e -> Error e )
|
|
thread_id_list
|
|
in
|
|
let markers = List.map Result.get_ok (List.filter Result.is_ok markers_res) in
|
|
|
|
let pp_marker fmt (lat, lng, content, thread_id) =
|
|
Format.fprintf fmt
|
|
{|{
|
|
"type": "Feature",
|
|
"geometry": {
|
|
"type": "Point",
|
|
"coordinates": [%s,%s]
|
|
},
|
|
"properties": {
|
|
"content": "%s",
|
|
"thread_id": "%s"
|
|
}}|}
|
|
(* geojson use lng lat, and not lat lng*)
|
|
(Float.to_string lng)
|
|
(Float.to_string lat) (String.escaped content) thread_id
|
|
in
|
|
let markers =
|
|
Format.asprintf "[%a]"
|
|
(Format.pp_print_list
|
|
~pp_sep:(fun fmt () -> Format.fprintf fmt ",")
|
|
pp_marker )
|
|
markers
|
|
in
|
|
Ok markers
|
|
|
|
let get_post_image post_id =
|
|
let** content = Db.find_opt Q.get_post_image_content post_id in
|
|
Ok content
|