{% comment %}
    Amazee.ai settings page (Django port of resources/views/amazee-settings.blade.php).

    Multi-step Alpine.js UI for the Amazee.ai connection flow:
      - start:        email input + "Start trial" / "Sign in" buttons
      - verification: code input
      - region:       region selection list
      - connected:    status display + disconnect button

    The flow is stateless on the server: the short-lived session token returned
    by sign-in is held client-side and passed back to /regions and /upgrade. The
    server-rendered `step` provides the initial state without an extra round-trip.
{% endcomment %}
{{ routes|json_script:"amazee-routes" }}
<div id="scolta-amazee"
     x-data="amazeeSettings('{{ step }}', JSON.parse(document.getElementById('amazee-routes').textContent), {{ upgrade_needed|yesno:'true,false' }})"
     x-init="init()">

    {# Re-authentication needed: the stored Amazee.ai credentials are no longer
       accepted. Rendered server-side so it is present on first load, and hidden
       client-side once a reconnect succeeds. The CTA runs the existing
       email-verification sign-in flow. #}
    {% if upgrade_needed %}
    <div x-show="upgradeNeeded" class="alert alert-warning" role="alert">
        <p>
            Your Amazee.ai connection needs to be re-authenticated. AI search
            features are paused until you reconnect.
        </p>
        <button type="button" @click="continueWithAmazee()" :disabled="loading" class="btn btn-primary btn-sm">
            Continue with Amazee.ai
        </button>
    </div>
    {% endif %}

    {# Connected #}
    <template x-if="step === 'connected'">
        <div>
            <p>
                Connected to Amazee.ai
                <template x-if="region">
                    <span>(region: <strong x-text="region"></strong>)</span>
                </template>.
            </p>
            <button type="button" @click="disconnect()" :disabled="loading" class="btn btn-secondary">
                <span x-show="loading">Disconnecting&hellip;</span>
                <span x-show="!loading">Disconnect</span>
            </button>
            <p x-show="error" x-text="error" class="text-danger mt-2"></p>
        </div>
    </template>

    {# Provider already configured — Amazee.ai not needed #}
    <template x-if="step === 'provider-configured'">
        <div>
            <p>AI provider already configured. Amazee.ai is not needed.</p>
            <button type="button" @click="step = 'start'" class="btn btn-secondary btn-sm">
                Set up Amazee.ai anyway
            </button>
        </div>
    </template>

    {# Start: email + trial/sign-in #}
    <template x-if="step === 'start'">
        <div>
            <p>Connect Scolta to Amazee.ai for privacy-respecting, budget-aware AI search.</p>
            <div class="mb-3">
                <label for="amazee-email">Email address</label>
                <input type="email" id="amazee-email" x-model="email" class="form-control" />
            </div>
            <p x-show="error" x-text="error" class="text-danger"></p>
            <button type="button" @click="startTrial()" :disabled="loading" class="btn btn-primary me-2">
                <span x-show="loading">Starting&hellip;</span>
                <span x-show="!loading">Start free trial</span>
            </button>
            <button type="button" @click="requestCode()" :disabled="loading" class="btn btn-secondary">
                Sign in to existing account
            </button>
        </div>
    </template>

    {# Verification code #}
    <template x-if="step === 'verification'">
        <div>
            <p>A verification code has been sent to <strong x-text="email"></strong>. Enter it below.</p>
            <div class="mb-3">
                <label for="amazee-code">Verification code</label>
                <input type="text" id="amazee-code" x-model="code" autocomplete="one-time-code" class="form-control" />
            </div>
            <p x-show="error" x-text="error" class="text-danger"></p>
            <button type="button" @click="verifyCode()" :disabled="loading" class="btn btn-primary me-2">
                <span x-show="loading">Verifying&hellip;</span>
                <span x-show="!loading">Verify code</span>
            </button>
            <button type="button" @click="step = 'start'; error = ''" :disabled="loading" class="btn btn-secondary">
                Back
            </button>
        </div>
    </template>

    {# Region selection #}
    <template x-if="step === 'region'">
        <div>
            <p>Select the region where your AI requests will be processed.</p>
            <p x-show="loadingRegions">Loading regions&hellip;</p>
            <div x-show="!loadingRegions && regions.length > 0" class="mb-3">
                <template x-for="r in regions" :key="r.id">
                    <div class="form-check">
                        <input class="form-check-input" type="radio" :id="'region-' + r.id"
                               :value="r.id" x-model="selectedRegion" />
                        <label class="form-check-label" :for="'region-' + r.id" x-text="r.name ?? r.id"></label>
                    </div>
                </template>
            </div>
            <p x-show="error" x-text="error" class="text-danger"></p>
            <button type="button" @click="connectRegion()" :disabled="loading || !selectedRegion" class="btn btn-primary me-2">
                <span x-show="loading">Connecting&hellip;</span>
                <span x-show="!loading">Connect</span>
            </button>
            <button type="button" @click="step = 'start'; error = ''" :disabled="loading" class="btn btn-secondary">
                Back
            </button>
        </div>
    </template>

</div>

<script>
function amazeeSettings(initialStep, routes, upgradeNeeded) {
    return {
        step: initialStep || 'start',
        email: '',
        code: '',
        sessionToken: '',
        region: null,
        regions: [],
        selectedRegion: '',
        loading: false,
        loadingRegions: false,
        error: '',
        routes: routes,
        upgradeNeeded: upgradeNeeded || false,

        // Re-authentication CTA: run the existing email-verification sign-in
        // flow to reconnect the Amazee.ai account.
        continueWithAmazee() {
            this.error = '';
            this.step = 'start';
        },

        async init() {
            if (this.step === 'connected') {
                try {
                    const res = await this.get(this.routes.status);
                    this.region = res.region;
                } catch (e) { /* status is best-effort */ }
            }
        },

        async startTrial() {
            this.error = ''; this.loading = true;
            try {
                const res = await this.post(this.routes.provision, { email: this.email });
                this.region = res.region;
                this.step = 'connected';
            } catch (e) { this.error = e.message; } finally { this.loading = false; }
        },

        async requestCode() {
            this.error = ''; this.loading = true;
            try {
                await this.post(this.routes.request_code, { email: this.email });
                this.step = 'verification';
            } catch (e) { this.error = e.message; } finally { this.loading = false; }
        },

        async verifyCode() {
            this.error = ''; this.loading = true;
            try {
                const res = await this.post(this.routes.sign_in, { email: this.email, code: this.code });
                this.sessionToken = res.session_token;
                this.step = 'region';
                await this.fetchRegions();
            } catch (e) { this.error = e.message; } finally { this.loading = false; }
        },

        async fetchRegions() {
            this.loadingRegions = true;
            try {
                const res = await this.post(this.routes.regions, { session_token: this.sessionToken });
                this.regions = res.regions || [];
            } catch (e) { this.error = e.message; } finally { this.loadingRegions = false; }
        },

        async connectRegion() {
            this.error = ''; this.loading = true;
            try {
                const res = await this.post(this.routes.upgrade, {
                    session_token: this.sessionToken, region_id: this.selectedRegion,
                });
                const cred = this.regions.find(r => r.id === this.selectedRegion);
                this.region = res.region || (cred ? (cred.name ?? cred.id) : this.selectedRegion);
                // Reconnect succeeded (server cleared the marker) — dismiss the banner.
                this.upgradeNeeded = false;
                this.step = 'connected';
            } catch (e) { this.error = e.message; } finally { this.loading = false; }
        },

        async disconnect() {
            this.error = ''; this.loading = true;
            try {
                await this.post(this.routes.disconnect, {});
                this.region = null;
                this.step = 'start';
            } catch (e) { this.error = e.message; } finally { this.loading = false; }
        },

        async get(url) {
            const resp = await fetch(url, {
                headers: { 'Accept': 'application/json', 'X-Requested-With': 'XMLHttpRequest' },
            });
            return this.parseResponse(resp);
        },

        async post(url, body) {
            const resp = await fetch(url, {
                method: 'POST',
                headers: {
                    'Accept': 'application/json',
                    'Content-Type': 'application/json',
                    'X-Requested-With': 'XMLHttpRequest',
                    'X-CSRFToken': '{{ csrf_token }}',
                },
                body: JSON.stringify(body),
            });
            return this.parseResponse(resp);
        },

        async parseResponse(resp) {
            const data = await resp.json().catch(() => ({}));
            if (! resp.ok) {
                throw new Error(data.error ?? data.message ?? `Request failed (${resp.status})`);
            }
            return data;
        },
    };
}
</script>