local tags = require("tags")
local util = require("util")
local pages = require("pages")
local config = require("config")
local session = require("session")
local db = require("db")
local queries = require("queries")
local sql = require("lsqlite3")
local cache = require("cache")

local oldconfigure = configure
local stmnt_delete
function configure(...)
	stmnt_delete = assert(db.conn:prepare(queries.delete_post),db.conn:errmsg())
	return oldconfigure(...)
end

local function delete_post(req)
	local host = http_request_get_host(req)
	local path = http_request_get_path(req)
	http_request_populate_post(req)
	local storystr = assert(http_argument_get_string(req,"story"))
	print("Looking at storystr:",storystr)
	local storyid = util.decode_id(storystr)
	local author, authorid = session.get(req)
	if not author then
		http_response(req, 401, pages.error{
			errcode = 401,
			errcodemsg = "Not authorized",
			explanation = "You must be logged in to delete posts. You are either not logged in or your session has expired.",
			should_traceback = true
		})
		return
	end
	log(LOG_DEBUG,string.format("Deleting post %d with proposed owner %d",storyid, authorid))
	stmnt_delete:bind_names{
		postid = storyid,
		authorid = authorid
	}
	local err = util.do_sql(stmnt_delete)
	if err ~= sql.DONE then
		log(LOG_DEBUG,string.format("Failed to delete: %d:%s",err, db.conn:errmsg()))
		http_response(req,500,pages.error{
			errcode = 500,
			errcodemsg = "Internal error",
			explanation = "Failed to delete posts from database:" .. db.conn:errmsg(),
			should_traceback = true,
		})
		stmnt_delete:reset()
	else
		local loc = string.format("https://%s/%s",config.domain,storystr)
		http_response_header(req,"Location",loc)
		http_response(req,303,"")
		stmnt_delete:reset()
		cache.dirty(string.format("%s",config.domain))
		cache.dirty(string.format("%s-logout",config.domain))
		cache.dirty(string.format("%s.%s",author,config.domain))
		cache.dirty(string.format("%s",storystr))
		cache.dirty(string.format("%s?comments=1",storystr))

	end
end

return delete_post