frontend/marko/page/story-content/components/chapter-meta/component.js

const moment = require("moment")

module.exports = class {
  onCreate() {
    this.state = {text: null, color: "color-menu", href: null, tooltip: null}
  }

  onInput(input) {
    if (this.state != null) {
      this.updateState(input)
    }
  }

  updateState({kind, weak, value, updated}) {
    this.state = {text: null, color: "color-menu", href: null, tooltip: null}

    if (value == null || value == "") {
      return
    }

    switch (kind) {
      case "date": {
        const m = moment(value)
        if (m.year() < 2) {
          break
        }

        if (!weak) {
          this.state.tooltip = `See all stories set during ${m.format("MMMM YYYY")}`
          this.state.href = `/story/by-month/${m.format("YYYY-MM")}/`
        }

        const dateStr = m.format("MMM D, YYYY")

        this.state.text = dateStr

        if (updated != null && Date.parse(updated) > Date.parse(value)) {
          const m2 = moment(updated)
          this.state.tooltip = "Originally posted: " + dateStr
          this.state.text = m2.format("MMM D, YYYY") + " *"
        }

        break
      }
  
      case "author": {
        this.state.text = value
        this.state.tooltip = "See all stories by " + value
        this.state.href = `/story/by-author/${value}/`

        break
      }
  
      default: {
        this.state.color = "color-menu"
        this.state.text = value

        break
      }
    }
  }
}