/**
 * 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.
 *
 * The chrome follows the framework's `PluginCard`: the root is an `<li>` (the
 * tab renders every card into a `<ul>`), the header is its own `<button>` that
 * discloses the controls in place, the card starts collapsed, it marks itself
 * when it holds unsaved edits, and it collapses again after a successful save.
 * Nothing about that is imported — `PluginCard` lives in that package's client
 * bundle and the client purity gate forbids cross-plugin value imports — so the
 * behaviour is reproduced here rather than borrowed.
 *
 * 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, for the same reason: 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

    const TITLE = 'Slopo'
    const DESCRIPTION = 'Embedding backend, index scope and the budget that stops a large embed.'

    /**
     * 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: 'Extra exclude patterns',
        kind: 'list',
        hint: 'Comma separated, gitignore style. Added to the defaults rather than replacing them.',
      },
      {
        key: 'useDefaultExcludes',
        label: 'Exclude node_modules and build output',
        kind: 'boolean',
        hint: 'Off means slopo parses your dependencies too — on a repo with node_modules, the difference between ~1,500 and ~114,000 code units.',
      },
      {
        key: 'maxIndexUnits',
        label: 'Refuse to embed more than this many units',
        kind: 'number',
        hint: 'Makes a large scope a question rather than an hours-long embed. 0 removes the limit.',
      },
      { 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 BORDER = '1px solid var(--dsh-border, #3a3a3a)'

    const S = {
      // The tab renders into a <ul>, so the root must be an <li> or the list
      // styling never reaches it.
      card: { listStyle: 'none', border: BORDER, borderRadius: '8px', margin: '8px 0', overflow: 'hidden' },
      cardOpen: { background: 'var(--dsh-surface, rgba(255,255,255,0.02))' },
      header: {
        display: 'flex',
        alignItems: 'center',
        gap: '12px',
        width: '100%',
        padding: '12px 16px',
        border: 'none',
        background: 'transparent',
        color: 'inherit',
        textAlign: 'left',
        cursor: 'pointer',
        font: 'inherit',
      },
      headText: { display: 'flex', flexDirection: 'column', gap: '2px', flex: '1 1 auto', minWidth: 0 },
      name: { fontSize: '14px', fontWeight: 600 },
      description: { fontSize: '11px', opacity: 0.65, lineHeight: 1.45 },
      pending: {
        flex: '0 0 auto',
        fontSize: '10px',
        textTransform: 'uppercase',
        letterSpacing: '0.04em',
        padding: '2px 6px',
        borderRadius: '4px',
        border: BORDER,
        opacity: 0.8,
      },
      chevron: { flex: '0 0 auto', fontSize: '10px', opacity: 0.7, transition: 'transform 120ms ease' },
      chevronOpen: { transform: 'rotate(180deg)' },
      body: { padding: '0 16px 16px 16px' },
      readOnly: { fontSize: '11px', opacity: 0.75, marginTop: 0, marginBottom: '12px' },
      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: BORDER,
        background: 'transparent',
        color: 'inherit',
      },
      actions: { display: 'flex', gap: '8px', alignItems: 'center', marginTop: '16px', flexWrap: 'wrap' },
      button: {
        padding: '6px 12px',
        fontSize: '12px',
        borderRadius: '6px',
        border: BORDER,
        background: 'transparent',
        color: 'inherit',
        cursor: 'pointer',
      },
      primary: { fontWeight: 600 },
      note: { fontSize: '11px', opacity: 0.75, marginLeft: 'auto' },
    }

    /** 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('')
      // Collapsed on mount, like every other card in the tab.
      const [open, setOpen] = react.useState(false)

      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 writable = snapshot.writable === true

      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.')
          // A landed save folds the card back up. A failed or blocked one stays
          // open with the drafts, which is the whole point of staging them.
          setOpen(false)
        } 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(
        'li',
        { style: open ? { ...S.card, ...S.cardOpen } : S.card },
        h(
          'button',
          {
            type: 'button',
            style: S.header,
            'aria-expanded': open,
            'aria-label': `${open ? 'Collapse' : 'Expand'}: ${TITLE}`,
            onClick: () => setOpen(!open),
          },
          h(
            'span',
            { style: S.headText },
            h('span', { style: S.name }, TITLE),
            h('span', { style: S.description }, DESCRIPTION),
          ),
          // Marked on the header, so unsaved edits are visible while collapsed.
          dirtyKeys.length > 0 ? h('span', { style: S.pending }, 'unsaved') : null,
          h('span', { style: open ? { ...S.chevron, ...S.chevronOpen } : S.chevron }, '▾'),
        ),
        open
          ? h(
              'div',
              { style: S.body },
              writable ? null : h('p', { style: S.readOnly, role: 'status' }, 'This namespace is read-only here.'),
              ...FIELDS.map((field) =>
                h(Field, {
                  key: field.key,
                  field,
                  value: current[field.key],
                  overridden: overriddenKeys.includes(field.key),
                  disabled: busy || !writable,
                  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),
              ),
            )
          : null,
      )
    }

    /**
     * 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
  },
})