package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/cobr-ai/apex/internal/scan"
	"github.com/cobr-ai/apex/internal/tui"
)

// main dispatches on the first argv: no subcommand → TUI; "discover" →
// resolve a careers URL into a Workday adapter snippet (useful during
// portal-curation). Keeping the dispatcher tiny avoids pulling in cobra just
// for one flag path.
func main() {
	if len(os.Args) > 1 {
		switch os.Args[1] {
		case "discover":
			os.Exit(runDiscover(os.Args[2:]))
		case "scan":
			os.Exit(runScan(os.Args[2:]))
		case "eval":
			os.Exit(runEval(os.Args[2:]))
		case "ingest":
			os.Exit(runIngest(os.Args[2:]))
		case "offers":
			os.Exit(runOffers(os.Args[2:]))
		case "linkedin":
			os.Exit(runLinkedIn(os.Args[2:]))
		case "cv":
			os.Exit(runCV(os.Args[2:]))
		case "patterns":
			os.Exit(runPatterns(os.Args[2:]))
		case "followup":
			os.Exit(runFollowup(os.Args[2:]))
		case "stories":
			os.Exit(runStories(os.Args[2:]))
		case "pipeline":
			if len(os.Args) < 3 {
				fmt.Fprintln(os.Stderr, "usage: apex pipeline <add|list|run> ...")
				os.Exit(2)
			}
			switch os.Args[2] {
			case "add":
				os.Exit(runPipelineAdd(os.Args[3:]))
			case "list":
				os.Exit(runPipelineList(os.Args[3:]))
			case "run":
				os.Exit(runPipelineRun(os.Args[3:]))
			default:
				fmt.Fprintf(os.Stderr, "unknown pipeline subcommand: %s\n", os.Args[2])
				os.Exit(2)
			}
		case "apply":
			os.Exit(runApply(os.Args[2:]))
		case "compare":
			os.Exit(runCompare(os.Args[2:]))
		case "deep":
			os.Exit(runDeep(os.Args[2:]))
		case "training":
			os.Exit(runTraining(os.Args[2:]))
		case "project":
			os.Exit(runProject(os.Args[2:]))
		case "negotiate":
			os.Exit(runNegotiate(os.Args[2:]))
		case "contacto":
			os.Exit(runContacto(os.Args[2:]))
		case "intake":
			os.Exit(runIntake(os.Args[2:]))
		case "-h", "--help", "help":
			printUsage()
			return
		}
	}
	app := tui.NewApp()
	if err := app.Run(); err != nil {
		fmt.Fprintf(os.Stderr, "error: %v\n", err)
		os.Exit(1)
	}
}

func printUsage() {
	fmt.Println("apex — TUI-first AI job search platform")
	fmt.Println()
	fmt.Println("Usage:")
	fmt.Println("  apex                      launch the TUI (default)")
	fmt.Println("  apex discover <url>       resolve Workday host/tenant/site for a careers URL")
	fmt.Println("  apex scan                 headless scan of all enabled adapters; writes new jobs to ~/.apex/apex.db")
	fmt.Println("  apex ingest <file.docx>   parse DOCX resume into cv.md with writing style extraction")
	fmt.Println("  apex eval [--limit N] [--min-score F] [--workers N]  evaluate pending jobs via Claude CLI; reports under ~/.apex/reports/")
	fmt.Println("  apex offers <url> <url> [url...]      compare evaluated jobs side-by-side with Claude ranking")
	fmt.Println("  apex pipeline <add|list|run>          manage pipeline queue (add/list/run jobs)")
	fmt.Println("  apex apply <url>          mark a job as applied (interactive confirmation)")
	fmt.Println("  apex compare [url]        compare job eval against senior engineer benchmark")
	fmt.Println("  apex deep [url]           deep company/culture/red-flag analysis")
	fmt.Println("  apex training [url]       personal development roadmap from job eval")
	fmt.Println("  apex project [url]        portfolio projects to address job gaps")
	fmt.Println("  apex negotiate [url]      salary negotiation strategy")
	fmt.Println("  apex contacto [url]       draft LinkedIn outreach messages for hiring team")
	fmt.Println("  apex cv [--job-url URL]   generate tailored HTML CV + PDF for a job (or generic CV if no job given)")
	fmt.Println("  apex patterns             show application pattern analysis (ghost rate, score distribution, etc)")
	fmt.Println("  apex followup             show pending follow-ups based on status cadence")
	fmt.Println("  apex stories [--limit N]  show STAR stories extracted from recent evaluations")
	fmt.Println("  apex intake [--synthesize] interactive 8-phase intake interview → cv.md + profile.yml")
	fmt.Println("  apex linkedin <subcommand>             LinkedIn browser automation (messages/thread/reply/invite/jobs/contacts/test)")
	fmt.Println("  apex help                 show this message")
	fmt.Println()
	fmt.Println("Environment:")
	fmt.Println("  APEX_DISCOVER_SCRIPT      absolute path to career-ops/discover-workday.mjs")
	fmt.Println("                            (used when the input URL isn't directly *.myworkdayjobs.com)")
	fmt.Println("  APEX_MIN_SCORE            eval score threshold; below = status Discarded")
}

func runDiscover(args []string) int {
	if len(args) == 0 {
		fmt.Fprintln(os.Stderr, "usage: apex discover <careers-url>")
		return 2
	}
	d := &scan.Discoverer{
		DiscoverScript: os.Getenv("APEX_DISCOVER_SCRIPT"),
		Timeout:        90 * time.Second,
	}
	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
	defer cancel()
	out, err := d.Discover(ctx, args[0])
	if err != nil {
		fmt.Fprintf(os.Stderr, "discover: %v\n", err)
		return 1
	}
	fmt.Printf("# Source: %s  Input: %s\n", out.Source, out.Input)
	fmt.Println(out.YAMLSnippet(""))
	return 0
}