# frozen_string_literal: true

RSpec.describe DraftsController do
  describe "#index" do
    it "requires you to be logged in" do
      get "/drafts.json"
      expect(response.status).to eq(403)
    end

    it "returns correct stream length after adding a draft" do
      user = sign_in(Fabricate(:user))
      Draft.set(user, "xxx", 0, "{}")
      get "/drafts.json"
      expect(response.status).to eq(200)
      parsed = response.parsed_body
      expect(response.parsed_body["drafts"].length).to eq(1)
    end

    it "has empty stream after deleting last draft" do
      user = sign_in(Fabricate(:user))
      Draft.set(user, "xxx", 0, "{}")
      Draft.clear(user, "xxx", 0)
      get "/drafts.json"
      expect(response.status).to eq(200)
      expect(response.parsed_body["drafts"].length).to eq(0)
    end

    it "does not include topic details when user cannot see topic" do
      topic = Fabricate(:private_message_topic)
      topic_user = topic.user
      other_user = Fabricate(:user)
      Draft.set(topic_user, "topic_#{topic.id}", 0, "{}")
      Draft.set(other_user, "topic_#{topic.id}", 0, "{}")

      sign_in(topic_user)
      get "/drafts.json"
      expect(response.status).to eq(200)
      expect(response.parsed_body["drafts"].first["title"]).to eq(topic.title)

      sign_in(other_user)
      get "/drafts.json"
      expect(response.status).to eq(200)
      expect(response.parsed_body["drafts"].first["title"]).to eq(nil)
    end
  end

  describe "#show" do
    it "returns a draft if requested" do
      user = sign_in(Fabricate(:user))
      Draft.set(user, "hello", 0, "test")

      get "/drafts/hello.json"
      expect(response.status).to eq(200)
      expect(response.parsed_body["draft"]).to eq("test")
    end
  end

  describe "#create" do
    it "requires you to be logged in" do
      post "/drafts.json"
      expect(response.status).to eq(403)
    end

    it "saves a draft" do
      user = sign_in(Fabricate(:user))

      post "/drafts.json", params: { draft_key: "xyz", data: { my: "data" }.to_json, sequence: 0 }

      expect(response.status).to eq(200)
      expect(Draft.get(user, "xyz", 0)).to eq(%q({"my":"data"}))
    end

    it "returns 404 when the key is missing" do
      sign_in(Fabricate(:user))
      post "/drafts.json", params: { data: { my: "data" }.to_json, sequence: 0 }
      expect(response.status).to eq(404)
    end

    it "checks for an conflict on update" do
      user = sign_in(Fabricate(:user))
      post = Fabricate(:post, user: user)

      post "/drafts.json",
           params: {
             draft_key: "topic",
             sequence: 0,
             data: { postId: post.id, originalText: post.raw, action: "edit" }.to_json,
           }

      expect(response.status).to eq(200)
      expect(response.parsed_body["conflict_user"]).to eq(nil)

      post "/drafts.json",
           params: {
             draft_key: "topic",
             sequence: 0,
             data: { postId: post.id, originalText: "something else", action: "edit" }.to_json,
           }

      expect(response.status).to eq(200)
      expect(response.parsed_body["conflict_user"]["id"]).to eq(post.last_editor.id)
      expect(response.parsed_body["conflict_user"]).to include("avatar_template")
    end

    it "cant trivially resolve conflicts without interaction" do
      user = sign_in(Fabricate(:user))

      DraftSequence.next!(user, "abc")

      post "/drafts.json",
           params: {
             draft_key: "abc",
             sequence: 0,
             data: { a: "test" }.to_json,
             owner: "abcdefg",
           }

      expect(response.status).to eq(200)
      expect(response.parsed_body["draft_sequence"]).to eq(1)
    end

    it "has a clean protocol for ownership handover" do
      user = sign_in(Fabricate(:user))

      post "/drafts.json",
           params: {
             draft_key: "abc",
             sequence: 0,
             data: { a: "test" }.to_json,
             owner: "abcdefg",
           }

      expect(response.status).to eq(200)
      expect(response.parsed_body["draft_sequence"]).to eq(0)

      post "/drafts.json",
           params: {
             draft_key: "abc",
             sequence: 0,
             data: { b: "test" }.to_json,
             owner: "hijklmnop",
           }

      expect(response.status).to eq(200)
      expect(response.parsed_body["draft_sequence"]).to eq(1)

      expect(DraftSequence.current(user, "abc")).to eq(1)

      post "/drafts.json",
           params: {
             draft_key: "abc",
             sequence: 1,
             data: { c: "test" }.to_json,
             owner: "hijklmnop",
           }

      expect(response.status).to eq(200)
      expect(response.parsed_body["draft_sequence"]).to eq(2)

      post "/drafts.json",
           params: {
             draft_key: "abc",
             sequence: 2,
             data: { c: "test" }.to_json,
             owner: "abc",
           }

      expect(response.status).to eq(200)
      expect(response.parsed_body["draft_sequence"]).to eq(3)
    end

    it "raises an error for out-of-sequence draft setting" do
      user = sign_in(Fabricate(:user))
      seq = DraftSequence.next!(user, "abc")
      Draft.set(user, "abc", seq, { b: "test" }.to_json)

      post "/drafts.json",
           params: {
             draft_key: "abc",
             sequence: seq - 1,
             data: { a: "test" }.to_json,
           }

      expect(response.status).to eq(409)

      post "/drafts.json",
           params: {
             draft_key: "abc",
             sequence: seq + 1,
             data: { a: "test" }.to_json,
           }

      expect(response.status).to eq(409)
    end
  end

  describe "#destroy" do
    it "destroys drafts when required" do
      user = sign_in(Fabricate(:user))
      Draft.set(user, "xxx", 0, "hi")
      delete "/drafts/xxx.json", params: { sequence: 0 }
      expect(response.status).to eq(200)
      expect(Draft.get(user, "xxx", 0)).to eq(nil)
    end
  end
end