[2] simplify text handlers as well

[MrOrz]

• Simplies handleInput and initState handler to handle just text events
  • handleInput is in charge of creating new (text) search session
  • initState takes input text from search session, no need to compose an event for it, greatly simplifies stuff
• Removes ChatbotEvent completely, as postback and text event handlers has their own events
  • This also removes the mock server_choose events and type for event.input, as we no longer need those.

[MrOrz]

Current dependencies on/for this PR:

• master
  • PR [1] Simplify postback handler signatures #372
    • PR [2] simplify text handlers as well #371 👈
      • PR [3] Move selectedArticleId from context to action payload #369
        • PR Fix choosing reply action #373
          • PR chore: upgrade redis client #374

This stack of pull requests is managed by Graphite.

[coveralls]

Pull Request Test Coverage Report for Build 6842018647

• 15 of 17 (88.24%) changed or added relevant lines in 3 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.1%) to 89.64%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/webhook/index.ts	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/webhook/handlers/defaultState.ts	2	0.0%

Totals
Change from base Build 6841960699:	-0.1%
Covered Lines:	965
Relevant Lines:	1039

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💛 - Coveralls

[MrOrz]

Merge activity

• Nov 22, 8:01 AM: @MrOrz started a stack merge that includes this pull request via Graphite.
• Nov 22, 8:01 AM: @MrOrz merged this pull request with Graphite.