/**
 * dsh-slopo — browser half: the card in Settings → Plugins → Plugin configuration.
 *
 * The Host half registers a `dsh-slopo` settings namespace. This file registers
 * a card under that exact namespace key. Both are required: the tab renders the
 * INTERSECTION of the namespaces the Host serves and the cards the browser
 * claims, so a served namespace with no card draws nothing at all, and a card
 * whose namespace is not served is never dispatched.
 *
 * Hand-written plain JavaScript inside the module-loader wrapper, with no build
 * step and no bundler. `dsh plugin add git+…` fetches sources rather than build
 * output, so a `prepare` script would make every user allowlist a build before
 * the first install succeeds. The only import is `react`, which is in the
 * platform seed table; anything outside that table would have to be bundled
 * into this file or declared in `dsh.client.external`.
 *
 * Styling is inline on purpose. The client bundle purity gate forbids
 * cross-plugin value imports, so there is no stylesheet this file may reach.
 */
window.__ModuleLoader__.load({
  id: 'dsh-slopo',
  factory: (require) => {
    var module = { exports: {} }
    var exports = module.exports

    const react = require('react')

    const NS = 'dsh-slopo'
    const h = react.createElement

    /**
     * The settings this card edits.
     *
     * This list mirrors the Host schema in index.js. It is duplicated rather
     * than fetched because the card renders its own controls — there is no
     * generic schema-to-form renderer in the framework — and a field the Host
     * does not know is rejected there anyway, so a drift shows up as a clear
     * error rather than silent data loss.
     */
    const FIELDS = [
      {
        key: 'embeddingModel',
        label: 'Embedding model',
        hint: 'LiteLLM string, provider prefix included — e.g. ollama/unclemusclez/jina-embeddings-v2-base-code:latest',
      },
      { key: 'embeddingDimensions', label: 'Embedding dimensions', kind: 'number', hint: 'Must match what the model returns. Frozen into the index at first use.' },
      { key: 'embeddingApiBase', label: 'Embedding API base', hint: 'e.g. http://127.0.0.1:11434' },
      {
        key: 'embeddingApiKey',
        label: 'Embedding API key',
        kind: 'password',
        hint: 'Passed to slopo in its environment and never written into the slopo config file.',
      },
      { key: 'embeddingParamsJson', label: 'Extra embedding parameters', hint: 'A JSON object, merged into embedding_params.' },
      { key: 'binary', label: 'slopo executable', hint: 'Empty discovers it: managed install, then PATH, then ~/.local/bin.' },
      { key: 'autoInstall', label: 'Install slopo with uv when missing', kind: 'boolean' },
      { key: 'sourceDir', label: 'Source directory', hint: 'Empty uses the session working directory.' },
      { key: 'sourceDirExclude', label: 'Exclude patterns', kind: 'list', hint: 'Comma separated, gitignore style.' },
      { key: 'stateDir', label: 'State directory', hint: 'Empty uses $DSH_HOME/dsh-slopo/workspaces/<workspace>.' },
      { key: 'ignoreFile', label: 'Ignore file', hint: 'Point this at the repository to version the dismissed clusters.' },
      { key: 'embeddingRequestDelay', label: 'Delay between embedding requests (ms)', kind: 'number' },
      { key: 'timeoutMs', label: 'Foreground timeout (ms)', kind: 'number' },
    ]

    const S = {
      card: { border: '1px solid var(--dsh-border, #3a3a3a)', borderRadius: '8px', padding: '16px', margin: '8px 0' },
      head: { display: 'flex', alignItems: 'baseline', justifyContent: 'space-between', gap: '12px', marginBottom: '4px' },
      title: { fontSize: '14px', fontWeight: 600 },
      badge: { fontSize: '11px', opacity: 0.7 },
      hint: { fontSize: '11px', opacity: 0.65, marginTop: '2px', lineHeight: 1.45 },
      row: { marginTop: '12px' },
      label: { display: 'block', fontSize: '12px', fontWeight: 500, marginBottom: '4px' },
      input: {
        width: '100%',
        boxSizing: 'border-box',
        padding: '6px 8px',
        fontSize: '12px',
        borderRadius: '6px',
        border: '1px solid var(--dsh-border, #3a3a3a)',
        background: 'transparent',
        color: 'inherit',
      },
      actions: { display: 'flex', gap: '8px', alignItems: 'center', marginTop: '16px', flexWrap: 'wrap' },
      button: {
        padding: '6px 12px',
        fontSize: '12px',
        borderRadius: '6px',
        border: '1px solid var(--dsh-border, #3a3a3a)',
        background: 'transparent',
        color: 'inherit',
        cursor: 'pointer',
      },
      primary: { fontWeight: 600 },
      note: { fontSize: '11px', opacity: 0.75, marginLeft: 'auto' },
      dirty: { fontSize: '11px', opacity: 0.8 },
    }

    /** The editable string form of one field's value. */
    function toText(field, value) {
      if (field.kind === 'list') return Array.isArray(value) ? value.join(', ') : ''
      if (field.kind === 'boolean') return value === true ? 'true' : 'false'
      if (value === undefined || value === null) return ''
      return String(value)
    }

    /** The value to write for one field, from its string form. */
    function fromText(field, text) {
      const trimmed = typeof text === 'string' ? text.trim() : ''
      if (field.kind === 'number') return Number(trimmed)
      if (field.kind === 'boolean') return trimmed === 'true'
      if (field.kind === 'list') {
        return trimmed === ''
          ? []
          : trimmed
              .split(/[,\n]/)
              .map((part) => part.trim())
              .filter((part) => part !== '')
      }
      return text
    }

    /** Build a draft of every field from a resolved section. */
    function toDraft(value) {
      const draft = {}
      for (const field of FIELDS) draft[field.key] = toText(field, value?.[field.key])
      return draft
    }

    function Field(props) {
      const { field, value, overridden, disabled, onChange } = props
      const common = {
        style: S.input,
        value,
        disabled,
        'aria-label': field.label,
        onChange: (event) => onChange(event.target.value),
      }
      return h(
        'div',
        { style: S.row },
        h(
          'label',
          { style: S.label },
          field.label,
          overridden ? h('span', { style: { opacity: 0.6, fontWeight: 400 } }, ' · overridden') : null,
        ),
        field.kind === 'boolean'
          ? h('input', {
              type: 'checkbox',
              checked: value === 'true',
              disabled,
              'aria-label': field.label,
              onChange: (event) => onChange(event.target.checked ? 'true' : 'false'),
            })
          : h('input', { ...common, type: field.kind === 'password' ? 'password' : 'text' }),
        field.hint === undefined ? null : h('div', { style: S.hint }, field.hint),
      )
    }

    function Card(props) {
      const scope = props.scope
      const [snapshot, setSnapshot] = react.useState(() => scope.getSnapshot())
      const [draft, setDraft] = react.useState(null)
      const [busy, setBusy] = react.useState(false)
      const [note, setNote] = react.useState('')

      react.useEffect(() => scope.subscribe(() => setSnapshot(scope.getSnapshot())), [scope])

      const status = snapshot.status
      const value = snapshot.value
      const baseline = react.useMemo(() => toDraft(value), [value])
      const current = draft ?? baseline
      const user = snapshot.user

      if (status === 'unavailable') {
        // A deployment without the Host half, or a remote browser: show no trace.
        return null
      }

      const dirtyKeys = FIELDS.filter((field) => current[field.key] !== baseline[field.key]).map((field) => field.key)
      const overriddenKeys = user !== null && typeof user === 'object' ? Object.keys(user) : []

      const save = async () => {
        setBusy(true)
        setNote('')
        try {
          for (const field of FIELDS) {
            const next = current[field.key]
            if (next === baseline[field.key]) continue
            // Clearing a field is an unset, not a write of "", so the value
            // re-inherits the composition layer instead of becoming empty.
            if (String(next).trim() === '') await scope.unset(field.key)
            else await scope.set(field.key, fromText(field, next))
          }
          setDraft(null)
          setNote('Saved.')
        } catch (error) {
          setNote(`Save failed: ${error?.message ?? error}`)
        } finally {
          setBusy(false)
        }
      }

      const reset = async () => {
        setBusy(true)
        setNote('')
        try {
          for (const key of overriddenKeys) await scope.unset(key)
          setDraft(null)
          setNote('Reset to the deployment defaults.')
        } catch (error) {
          setNote(`Reset failed: ${error?.message ?? error}`)
        } finally {
          setBusy(false)
        }
      }

      return h(
        'div',
        { style: S.card },
        h(
          'div',
          { style: S.head },
          h('div', { style: S.title }, 'Slopo'),
          h(
            'div',
            { style: S.badge },
            status === 'loading' ? 'loading…' : 'configuration',
            snapshot.writable === true ? '' : ' · read-only',
          ),
        ),
        h(
          'div',
          { style: S.hint },
          'Slopo runs as a separate process. Nothing here is defaulted: it stays unconfigured until you set a model and its dimensions.',
        ),
        ...FIELDS.map((field) =>
          h(Field, {
            key: field.key,
            field,
            value: current[field.key],
            overridden: overriddenKeys.includes(field.key),
            disabled: busy || snapshot.writable !== true,
            onChange: (next) => setDraft({ ...current, [field.key]: next }),
          }),
        ),
        h(
          'div',
          { style: S.actions },
          h(
            'button',
            { type: 'button', style: { ...S.button, ...S.primary }, disabled: busy || dirtyKeys.length === 0, onClick: save },
            dirtyKeys.length === 0 ? 'Save' : `Save ${dirtyKeys.length} change${dirtyKeys.length === 1 ? '' : 's'}`,
          ),
          h(
            'button',
            { type: 'button', style: S.button, disabled: busy || overriddenKeys.length === 0, onClick: reset },
            `Reset ${overriddenKeys.length} override${overriddenKeys.length === 1 ? '' : 's'}`,
          ),
          note === '' ? null : h('span', { style: S.note }, note),
        ),
      )
    }

    /**
     * Register the card, but only once a settings transport exists.
     *
     * `ctx.inject(['settingsScope'], …)` rather than a top-level `inject`,
     * because a required dependency that is unsatisfied means this plugin never
     * applies at all — the card would vanish along with everything else instead
     * of simply not appearing.
     */
    function apply(ctx) {
      ctx.inject(['settingsScope'], (scoped) => {
        const binder = scoped.settingsScope
        if (binder === undefined) return
        const scope = binder.bind({ namespace: NS })
        scoped.slots.inject('settings.plugin.item', () =>
          scoped.slots.register(
            {
              name: 'settings.plugin.item',
              key: NS,
              inject: () => ({ scope }),
            },
            (props) => h(Card, props),
          ),
        )
      })
    }

    module.exports = { name: NS, inject: ['slots'], apply }
    return module.exports
  },
})