import { v } from 'convex/values'
import { internal } from './_generated/api'
import { action } from './_generated/server'

export const dispatchGithubBuild = action({
  args: {
    buildId: v.id('builds'),
    target: v.string(),
    flags: v.string(),
    version: v.string(),
    buildHash: v.string(),
    plugins: v.optional(v.array(v.string())),
  },
  handler: async (ctx, args) => {
    const githubToken = process.env.GITHUB_TOKEN
    if (!githubToken) {
      throw new Error('GITHUB_TOKEN is not set')
    }

    const convexUrl = process.env.CONVEX_SITE_URL
    if (!convexUrl) {
      console.error('CONVEX_SITE_URL is not set')
      // Proceeding anyway might fail if workflow requires it
    }

    console.log('dispatchGithubBuild args:', JSON.stringify(args, null, 2))

    if (!args.buildHash) {
      throw new Error('args.buildHash is missing or empty')
    }

    // Use test workflow when running in Convex dev mode
    const isDev = process.env.CONVEX_ENV === 'dev'
    const workflowFile = isDev ? 'custom_build_test.yml' : 'custom_build.yml'

    const payload = {
      ref: 'main', // or make this configurable
      inputs: {
        target: args.target,
        flags: args.flags,
        version: args.version,
        build_id: args.buildId,
        build_hash: args.buildHash,
        convex_url: convexUrl || 'https://example.com', // Fallback to avoid missing input error if that's the cause
        plugins: (args.plugins ?? []).join(' '),
      },
    }

    console.log(
      `Dispatching GitHub build to ${workflowFile} with payload:`,
      JSON.stringify(payload, null, 2)
    )

    try {
      const url = `https://api.github.com/repos/MeshEnvy/mesh-forge/actions/workflows/${workflowFile}/dispatches`
      console.log('GitHub API URL:', url)
      const response = await fetch(url, {
        method: 'POST',
        headers: {
          Authorization: `Bearer ${githubToken}`,
          Accept: 'application/vnd.github.v3+json',
          'Content-Type': 'application/json',
        },
        body: JSON.stringify(payload),
      })

      if (!response.ok) {
        const errorText = await response.text()
        throw new Error(`GitHub API failed: ${response.status} ${errorText}`)
      }

      // Note: GitHub dispatch API doesn't return the run ID immediately.
      // We rely on the webhook to link the run back to our build record.
      // Alternatively, we could poll for the most recent run, but that's race-condition prone.
    } catch (error) {
      await ctx.runMutation(internal.builds.logBuildError, {
        buildId: args.buildId,
        error: String(error),
      })
      // Re-throw so it shows up in Convex logs too
      throw error
    }
  },
})