'use client';

import Link from 'next/link';
import { useParams } from 'next/navigation';
import { SpoonActivityTimeline } from '@/components/spoons/spoon-activity-timeline';
import { SpoonAgentSettingsForm } from '@/components/spoons/spoon-agent-settings-form';
import { SpoonClonePanel } from '@/components/spoons/spoon-clone-panel';
import { SpoonCommitList } from '@/components/spoons/spoon-commit-list';
import { SpoonDetailHeader } from '@/components/spoons/spoon-detail-header';
import { SpoonMetrics } from '@/components/spoons/spoon-metrics';
import { SpoonPrList } from '@/components/spoons/spoon-pr-list';
import { SpoonSecretsForm } from '@/components/spoons/spoon-secrets-form';
import { SpoonSettingsForm } from '@/components/spoons/spoon-settings-form';
import { DeleteThreadButton } from '@/components/threads/delete-thread-button';
import { ThreadWorkspaceForm } from '@/components/threads/thread-workspace-form';
import { useQuery } from 'convex/react';

import type { Id } from '@spoon/backend/convex/_generated/dataModel.js';
import { api } from '@spoon/backend/convex/_generated/api.js';
import {
  Card,
  CardContent,
  CardHeader,
  CardTitle,
  Tabs,
  TabsContent,
  TabsList,
  TabsTrigger,
} from '@spoon/ui';

const SpoonDetailPage = () => {
  const params = useParams<{ spoonId: string }>();
  const spoonId = params.spoonId as Id<'spoons'>;
  const details = useQuery(api.spoons.getDetails, { spoonId });
  const upstreamCommits =
    useQuery(api.spoonCommits.listForSpoon, {
      spoonId,
      side: 'upstream',
      limit: 100,
    }) ?? [];
  const forkCommits =
    useQuery(api.spoonCommits.listForSpoon, {
      spoonId,
      side: 'fork',
      limit: 100,
    }) ?? [];
  const pullRequests =
    useQuery(api.spoonPullRequests.listForSpoon, { spoonId, limit: 100 }) ?? [];
  const syncRuns =
    useQuery(api.syncRuns.listForSpoon, { spoonId, limit: 25 }) ?? [];
  const threads =
    useQuery(api.threads.listForSpoon, { spoonId, limit: 25 }) ?? [];
  const agentSettings = useQuery(api.spoonAgentSettings.getForSpoon, {
    spoonId,
  });
  const agentJobs =
    useQuery(api.agentJobs.listForSpoon, { spoonId, limit: 25 }) ?? [];
  const canDeleteThread = (thread: (typeof threads)[number]) => {
    const latestJobStatus = thread.latestJobStatus;
    const latestWorkspaceStatus = thread.latestJobWorkspaceStatus;
    if (!latestJobStatus && !latestWorkspaceStatus) return true;
    return (
      ['failed', 'cancelled', 'timed_out', 'draft_pr_opened'].includes(
        latestJobStatus ?? '',
      ) ||
      ['stopped', 'expired', 'failed'].includes(latestWorkspaceStatus ?? '')
    );
  };

  if (details === undefined) {
    return <main className='text-muted-foreground p-6'>Loading Spoon...</main>;
  }

  return (
    <main className='space-y-6'>
      <SpoonDetailHeader spoon={details.spoon} state={details.state} />
      <SpoonMetrics
        spoon={details.spoon}
        state={details.state}
        latestThread={threads[0]}
      />
      {details.spoon.lastError ? (
        <Card className='border-destructive shadow-none'>
          <CardContent className='p-4 text-sm'>
            {details.spoon.lastError}
          </CardContent>
        </Card>
      ) : null}

      <Tabs defaultValue='overview' className='flex flex-col gap-5'>
        <TabsList
          variant='line'
          className='border-border flex h-auto w-full justify-start overflow-x-auto rounded-none border-b p-0'
        >
          <TabsTrigger className='h-9 flex-none px-3' value='overview'>
            Overview
          </TabsTrigger>
          <TabsTrigger className='h-9 flex-none px-3' value='upstream'>
            Upstream
          </TabsTrigger>
          <TabsTrigger className='h-9 flex-none px-3' value='fork'>
            Fork changes
          </TabsTrigger>
          <TabsTrigger className='h-9 flex-none px-3' value='pulls'>
            Pull requests
          </TabsTrigger>
          <TabsTrigger className='h-9 flex-none px-3' value='threads'>
            Threads
          </TabsTrigger>
          <TabsTrigger className='h-9 flex-none px-3' value='activity'>
            Activity
          </TabsTrigger>
          <TabsTrigger className='h-9 flex-none px-3' value='settings'>
            Settings
          </TabsTrigger>
        </TabsList>

        <TabsContent value='overview' className='space-y-4'>
          <div className='grid gap-4 xl:grid-cols-[1.15fr_0.85fr]'>
            <Card className='shadow-none'>
              <CardHeader className='pb-3'>
                <CardTitle className='text-base'>Repository health</CardTitle>
              </CardHeader>
              <CardContent className='grid gap-4 text-sm md:grid-cols-2'>
                <div>
                  <p className='text-muted-foreground'>Drift state</p>
                  <p className='mt-1 text-xl font-semibold capitalize'>
                    {(
                      details.state?.status ??
                      details.spoon.syncStatus ??
                      'unknown'
                    ).replaceAll('_', ' ')}
                  </p>
                  {details.effectiveUpstreamAheadBy === 0 &&
                  (details.state?.upstreamAheadBy ??
                    details.spoon.upstreamAheadBy ??
                    0) > 0 ? (
                    <p className='text-muted-foreground mt-1 text-xs'>
                      Up to date after ignored upstream changes. Raw upstream
                      ahead:{' '}
                      {details.state?.upstreamAheadBy ??
                        details.spoon.upstreamAheadBy}
                    </p>
                  ) : null}
                </div>
                <div>
                  <p className='text-muted-foreground'>Default branches</p>
                  <p className='mt-1 font-medium'>
                    {details.state?.upstreamDefaultBranch ??
                      details.spoon.upstreamDefaultBranch}{' '}
                    →{' '}
                    {details.state?.forkDefaultBranch ??
                      details.spoon.forkDefaultBranch ??
                      details.spoon.upstreamDefaultBranch}
                  </p>
                </div>
                <div>
                  <p className='text-muted-foreground'>Merge base</p>
                  <p className='mt-1 truncate font-mono text-xs'>
                    {details.state?.mergeBaseSha ??
                      details.spoon.lastMergeBaseCommit ??
                      'Unknown'}
                  </p>
                </div>
                <div>
                  <p className='text-muted-foreground'>Cadence</p>
                  <p className='mt-1 font-medium capitalize'>
                    {details.spoon.syncCadence}
                  </p>
                </div>
              </CardContent>
            </Card>
            <Card className='shadow-none'>
              <CardHeader className='pb-3'>
                <CardTitle className='text-base'>Latest thread</CardTitle>
              </CardHeader>
              <CardContent className='space-y-3 text-sm'>
                {threads[0] ? (
                  <>
                    <div className='grid grid-cols-2 gap-3'>
                      <div>
                        <p className='text-muted-foreground'>Status</p>
                        <p className='mt-1 font-semibold capitalize'>
                          {threads[0].status.replaceAll('_', ' ')}
                        </p>
                      </div>
                      <div>
                        <p className='text-muted-foreground'>Source</p>
                        <p className='mt-1 font-semibold capitalize'>
                          {threads[0].source.replaceAll('_', ' ')}
                        </p>
                      </div>
                    </div>
                    <p className='text-muted-foreground'>
                      {threads[0].summary ??
                        'Open the thread to continue maintenance work.'}
                    </p>
                  </>
                ) : (
                  <p className='text-muted-foreground'>
                    Refresh GitHub state or create a thread to start maintenance
                    work for this Spoon.
                  </p>
                )}
              </CardContent>
            </Card>
            <SpoonClonePanel spoon={details.spoon} />
          </div>

          <div className='grid gap-4 xl:grid-cols-2'>
            <section className='space-y-3'>
              <div>
                <h2 className='text-base font-semibold'>Upstream waiting</h2>
                <p className='text-muted-foreground text-sm'>
                  Commits upstream has that your fork does not.
                </p>
              </div>
              <SpoonCommitList
                commits={upstreamCommits.slice(0, 5)}
                empty='No upstream-only commits are cached. Refresh from GitHub to check drift.'
              />
            </section>
            <section className='space-y-3'>
              <div>
                <h2 className='text-base font-semibold'>Fork changes</h2>
                <p className='text-muted-foreground text-sm'>
                  Custom commits Spoon should preserve during maintenance.
                </p>
              </div>
              <SpoonCommitList
                commits={forkCommits.slice(0, 5)}
                empty='No fork-only commits are cached.'
              />
            </section>
          </div>
        </TabsContent>

        <TabsContent value='upstream'>
          <SpoonCommitList
            commits={upstreamCommits}
            empty='No upstream changes are waiting, or this Spoon has not been refreshed yet.'
          />
        </TabsContent>

        <TabsContent value='fork'>
          <SpoonCommitList
            commits={forkCommits}
            empty='No fork-only commits are cached. Your customizations will appear here after refresh.'
          />
        </TabsContent>

        <TabsContent value='pulls'>
          <SpoonPrList pullRequests={pullRequests} />
        </TabsContent>

        <TabsContent value='threads' className='space-y-4'>
          <ThreadWorkspaceForm
            spoon={details.spoon}
            agentSettings={agentSettings}
          />
          <Card className='shadow-none'>
            <CardHeader>
              <CardTitle className='text-base'>Spoon threads</CardTitle>
            </CardHeader>
            <CardContent className='space-y-3'>
              {threads.length ? (
                threads.map((thread) => (
                  <div
                    key={thread._id}
                    className='border-border hover:border-primary/50 grid gap-3 rounded-md border p-3 transition-colors md:grid-cols-[1fr_auto] md:items-center'
                  >
                    <Link href={`/threads/${thread._id}`} className='min-w-0'>
                      <p className='truncate font-medium'>{thread.title}</p>
                      <p className='text-muted-foreground mt-1 text-sm'>
                        {thread.status.replaceAll('_', ' ')} ·{' '}
                        {thread.source.replaceAll('_', ' ')}
                        {thread.latestJobWorkspaceStatus
                          ? ` · workspace ${thread.latestJobWorkspaceStatus.replaceAll('_', ' ')}`
                          : ''}
                      </p>
                    </Link>
                    <div className='flex justify-start md:justify-end'>
                      <DeleteThreadButton
                        threadId={thread._id}
                        disabled={!canDeleteThread(thread)}
                        label='Delete'
                        variant='outline'
                      />
                    </div>
                  </div>
                ))
              ) : (
                <p className='text-muted-foreground text-sm'>
                  No threads exist for this Spoon yet.
                </p>
              )}
            </CardContent>
          </Card>
        </TabsContent>

        <TabsContent value='activity'>
          <SpoonActivityTimeline
            syncRuns={syncRuns}
            threads={threads}
            jobs={agentJobs}
          />
        </TabsContent>

        <TabsContent value='settings' className='space-y-4'>
          <SpoonSettingsForm
            spoon={details.spoon}
            settings={details.settings}
          />
          <SpoonAgentSettingsForm
            spoon={details.spoon}
            settings={agentSettings}
          />
          <SpoonSecretsForm spoonId={spoonId} />
        </TabsContent>
      </Tabs>
    </main>
  );
};

export default SpoonDetailPage;